Updates and Deletions

The merging documentation specifies how individual releases are merged into compiled releases (the latest version of the contracting process) and versioned releases (the change history for each field), which form part of a record.

The merge routine also allows a publisher to correct a publication error by deleting a field, object or array entry from the compiled release. To do so, a publisher sets the field's value to null in an individual release (more on this below). As such, as a publisher, it is important to never use a null value in an individual release, unless you intend to delete that field. If you don't have a value to assign to a field, simply omit the field from the JSON, or assign an empty value like "", [] or {}. Using null values correctly means that publishers and/or users can create compiled releases reliably.

The following examples show how updates and deletions are reflected in compiled and versioned releases.

Example 1: Updates

A public procurement agency publishes a release to announce an opportunity on January 1, 2016 in which the total estimated value of the procurement is $1,000. On January 31, it publishes a release to expand the description of the procurement. On February 5, it publishes a release to amend the opportunity, in which the total estimated value is increased to $2,000.

Le service achat décide d'attribuer le marché à deux des soumissionnaires. Le 1er mars, il publie une instance OCDS qui annonce l'attribution à la société A d'un contrat de 750 USD. Le 3 mars, il publie une nouvelle instance OCDS qui annonce l'attribution à la société B d'un contrat de 750 USD.

À travers ces deux instances, le service achat fournit des données en temps réel au fur et à mesure du processus de passation de marché.

In each release, the agency also updates the record, which combines all the releases to date. In the final record:

  • L'instance compilée contient toutes les informations concernant l'opportunité du marché, ainsi que les attributions, en utilisant le même schéma qu'une instance.

  • The versioned release makes it easy to see how the description and total estimated value changed over time.

{
    "uri": "https://standard.open-contracting.org/examples/releases/ocds-213czf-000-00002-01-tender.json",
    "publishedDate": "2016-01-01T09:30:00Z",
    "publisher": {
        "scheme": "GB-COH",
        "uid": "09506232",
        "name": "Open Data Services Co-operative Limited",
        "uri": "https://standard.open-contracting.org/examples/"
    },
    "license": "http://opendatacommons.org/licenses/pddl/1.0/",
    "publicationPolicy": "https://github.com/open-contracting/sample-data/",
    "version": "1.1",
    "extensions": [],
    "releases": [
        {
            "ocid": "ocds-213czf-000-00002",
            "id": "ocds-213czf-000-00002-01-tender",
            "date": "2016-01-01T09:30:00Z",
            "language": "en",
            "tag": [
                "tender"
            ],
            "initiationType": "tender",
            "parties": [
                {
                    "name": "Open Data Services",
                    "identifier": {
                        "scheme": "GB-COH",
                        "id": "09506232",
                        "legalName": "Open Data Services Co-operative",
                        "uri": "https://opencorporates.com/companies/gb/09506232"
                    },
                    "roles": [
                        "buyer"
                    ],
                    "id": "GB-COH-09506232"
                }
            ],
            "buyer": {
                "id": "GB-COH-09506232",
                "name": "Open Data Services"
            },
            "tender": {
                "id": "ocds-213czf-000-00002-01-tender",
                "title": "Data merging tool",
                "description": "Data merge tool.",
                "status": "active",
                "value": {
                    "amount": 1000,
                    "currency": "USD"
                },
                "procurementMethod": "open",
                "awardCriteria": "bestProposal",
                "submissionMethod": [
                    "electronicSubmission"
                ],
                "tenderPeriod": {
                    "startDate": "2016-01-31T09:00:00Z",
                    "endDate": "2016-02-15T18:00:00Z"
                },
                "awardPeriod": {
                    "startDate": "2016-04-01T00:00:00Z",
                    "endDate": "2016-06-01T23:59:59Z"
                }
            }
        }
    ]
}
{
    "uri": "https://standard.open-contracting.org/examples/releases/ocds-213czf-000-00002-01-tender-update.json",
    "publishedDate": "2016-01-31T09:30:00Z",
    "publisher": {
        "scheme": "GB-COH",
        "uid": "09506232",
        "name": "Open Data Services Co-operative Limited",
        "uri": "https://standard.open-contracting.org/examples/"
    },
    "license": "http://opendatacommons.org/licenses/pddl/1.0/",
    "publicationPolicy": "https://github.com/open-contracting/sample-data/",
    "version": "1.1",
    "extensions": [],
    "releases": [
        {
            "ocid": "ocds-213czf-000-00002",
            "id": "ocds-213czf-000-00002-01-tender-update",
            "date": "2016-01-31T09:30:00Z",
            "language": "en",
            "tag": [
                "tenderUpdate"
            ],
            "initiationType": "tender",
            "parties": [
                {
                    "name": "Open Data Services",
                    "identifier": {
                        "scheme": "GB-COH",
                        "id": "09506232",
                        "legalName": "Open Data Services Co-operative",
                        "uri": "https://opencorporates.com/companies/gb/09506232"
                    },
                    "roles": [
                        "buyer"
                    ],
                    "id": "GB-COH-09506232"
                }
            ],
            "buyer": {
                "id": "GB-COH-09506232",
                "name": "Open Data Services"
            },
            "tender": {
                "id": "ocds-213czf-000-00002-01-tender",
                "title": "Data merging tool",
                "description": "Creation of a data merging tool. The tool should by written in Python. Proposals should be submitted by e-mail.",
                "status": "active",
                "value": {
                    "amount": 1000,
                    "currency": "USD"
                },
                "procurementMethod": "open",
                "awardCriteria": "bestProposal",
                "submissionMethod": [
                    "electronicSubmission"
                ],
                "tenderPeriod": {
                    "startDate": "2016-01-31T09:00:00Z",
                    "endDate": "2016-02-15T18:00:00Z"
                },
                "awardPeriod": {
                    "startDate": "2016-04-01T00:00:00Z",
                    "endDate": "2016-06-01T23:59:59Z"
                }
            }
        }
    ]
}
{
    "uri": "https://standard.open-contracting.org/examples/releases/ocds-213czf-000-00002-01-tender-amendment.json",
    "publishedDate": "2016-02-05T10:30:00Z",
    "publisher": {
        "scheme": "GB-COH",
        "uid": "09506232",
        "name": "Open Data Services Co-operative Limited",
        "uri": "https://standard.open-contracting.org/examples/"
    },
    "license": "http://opendatacommons.org/licenses/pddl/1.0/",
    "publicationPolicy": "https://github.com/open-contracting/sample-data/",
    "version": "1.1",
    "extensions": [],
    "releases": [
        {
            "ocid": "ocds-213czf-000-00002",
            "id": "ocds-213czf-000-00002-01-tender-amendment",
            "date": "2016-02-05T10:30:00Z",
            "language": "en",
            "tag": [
                "tenderAmendment"
            ],
            "initiationType": "tender",
            "parties": [
                {
                    "name": "Open Data Services",
                    "identifier": {
                        "scheme": "GB-COH",
                        "id": "09506232",
                        "legalName": "Open Data Services Co-operative",
                        "uri": "https://opencorporates.com/companies/gb/09506232"
                    },
                    "roles": [
                        "buyer"
                    ],
                    "id": "GB-COH-09506232"
                }
            ],
            "buyer": {
                "id": "GB-COH-09506232",
                "name": "Open Data Services"
            },
            "tender": {
                "id": "ocds-213czf-000-00002-01-tender",
                "title": "Data merging tool",
                "description": "Creation of a data merging tool. The tool should by written in Python. Proposals should be submitted by e-mail.",
                "status": "active",
                "value": {
                    "amount": 2000,
                    "currency": "USD"
                },
                "procurementMethod": "open",
                "awardCriteria": "bestProposal",
                "submissionMethod": [
                    "electronicSubmission"
                ],
                "tenderPeriod": {
                    "startDate": "2016-01-31T09:00:00Z",
                    "endDate": "2016-02-20T18:00:00Z"
                },
                "awardPeriod": {
                    "startDate": "2016-04-01T00:00:00Z",
                    "endDate": "2016-06-01T23:59:59Z"
                },
                "amendments": [
                    {
                        "id": "amendment-1",
                        "date": "2016-02-04T09:30:00Z",
                        "rationale": "Based on feedback from potential bidders, the total budget was increased by $1000, and the deadline extended",
                        "amendsReleaseID": "ocds-213czf-000-00002-01-tender",
                        "releaseID": "ocds-213czf-000-00002-01-tender-amendment"
                    }
                ]
            }
        }
    ]
}
{
    "uri": "https://standard.open-contracting.org/examples/releases/ocds-213czf-000-00002-01-award1.json",
    "publishedDate": "2016-03-01T09:30:00Z",
    "publisher": {
        "scheme": "GB-COH",
        "uid": "09506232",
        "name": "Open Data Services Co-operative Limited",
        "uri": "https://standard.open-contracting.org/examples/"
    },
    "license": "http://opendatacommons.org/licenses/pddl/1.0/",
    "publicationPolicy": "https://github.com/open-contracting/sample-data/",
    "version": "1.1",
    "extensions": [],
    "releases": [
        {
            "ocid": "ocds-213czf-000-00002",
            "id": "ocds-213czf-000-00002-01-award1",
            "date": "2016-03-01T09:30:00Z",
            "language": "en",
            "tag": [
                "award"
            ],
            "initiationType": "tender",
            "parties": [
                {
                    "name": "Open Data Services",
                    "identifier": {
                        "scheme": "GB-COH",
                        "id": "09506232",
                        "legalName": "Open Data Services Co-operative",
                        "uri": "https://opencorporates.com/companies/gb/09506232"
                    },
                    "roles": [
                        "buyer"
                    ],
                    "id": "GB-COH-09506232"
                }
            ],
            "buyer": {
                "id": "GB-COH-09506232",
                "name": "Open Data Services"
            },
            "awards": [
                {
                    "id": "ocds-213czf-000-00002-award-supplier-one",
                    "title": "Award of contract to create the data merging tool.",
                    "description": "Supplier 1 has been commissioned to create the merge tool. A separate contract will be awarded to write the documentation",
                    "status": "active",
                    "date": "2016-03-01T09:30:00Z",
                    "value": {
                        "amount": 750,
                        "currency": "USD"
                    }
                }
            ]
        }
    ]
}
{
    "uri": "https://standard.open-contracting.org/examples/releases/ocds-213czf-000-00002-01-award2.json",
    "publishedDate": "2016-03-03T09:30:00Z",
    "publisher": {
        "scheme": "GB-COH",
        "uid": "09506232",
        "name": "Open Data Services Co-operative Limited",
        "uri": "https://standard.open-contracting.org/examples/"
    },
    "license": "http://opendatacommons.org/licenses/pddl/1.0/",
    "publicationPolicy": "https://github.com/open-contracting/sample-data/",
    "version": "1.1",
    "extensions": [],
    "releases": [
        {
            "ocid": "ocds-213czf-000-00002",
            "id": "ocds-213czf-000-00002-01-award2",
            "date": "2016-03-03T09:30:00Z",
            "language": "en",
            "tag": [
                "award"
            ],
            "initiationType": "tender",
            "parties": [
                {
                    "name": "Open Data Services",
                    "identifier": {
                        "scheme": "GB-COH",
                        "id": "09506232",
                        "legalName": "Open Data Services Co-operative",
                        "uri": "https://opencorporates.com/companies/gb/09506232"
                    },
                    "roles": [
                        "buyer"
                    ],
                    "id": "GB-COH-09506232"
                }
            ],
            "buyer": {
                "id": "GB-COH-09506232",
                "name": "Open Data Services"
            },
            "awards": [
                {
                    "id": "ocds-213czf-000-00002-award-supplier-two",
                    "title": "Award of contract to create the data merging tool.",
                    "description": "Supplier 2 has been commissioned to create the documentation. A separate contract will be awarded to create the tool",
                    "status": "active",
                    "date": "2016-03-03T09:30:00Z",
                    "value": {
                        "amount": 750,
                        "currency": "USD"
                    }
                }
            ]
        }
    ]
}
{
    "uri": "https://standard.open-contracting.org/examples/records/ocds-213czf-000-00002-merge.json",
    "publisher": {
        "scheme": "GB-COH",
        "uid": "09506232",
        "name": "Open Data Services Co-operative Limited",
        "uri": "https://standard.open-contracting.org/examples/"
    },
    "publishedDate": "2016-03-05T13:02:00Z",
    "license": "http://opendatacommons.org/licenses/pddl/1.0/",
    "publicationPolicy": "https://github.com/open-contracting/sample-data/",
    "version": "1.1",
    "packages": [
        "https://standard.open-contracting.org/examples/releases/ocds-213czf-000-00002-01-award1.json",
        "https://standard.open-contracting.org/examples/releases/ocds-213czf-000-00002-01-award2.json",
        "https://standard.open-contracting.org/examples/releases/ocds-213czf-000-00002-01-tender.json",
        "https://standard.open-contracting.org/examples/releases/ocds-213czf-000-00002-01-tender-update.json",
        "https://standard.open-contracting.org/examples/releases/ocds-213czf-000-00002-01-tender-amendment.json"
    ],
    "records": [
        {
            "ocid": "ocds-213czf-000-00002",
            "releases": [
                {
                    "url": "https://standard.open-contracting.org/examples/releases/ocds-213czf-000-00002-01-award1.json#ocds-213czf-000-00002-01-award1",
                    "date": "2016-03-01T09:30:00Z",
                    "tag": [
                        "award"
                    ]
                },
                {
                    "url": "https://standard.open-contracting.org/examples/releases/ocds-213czf-000-00002-01-award2.json#ocds-213czf-000-00002-01-award2",
                    "date": "2016-03-03T09:30:00Z",
                    "tag": [
                        "award"
                    ]
                },
                {
                    "url": "https://standard.open-contracting.org/examples/releases/ocds-213czf-000-00002-01-tender.json#ocds-213czf-000-00002-01-tender",
                    "date": "2016-01-01T09:30:00Z",
                    "tag": [
                        "tender"
                    ]
                },
                {
                    "url": "https://standard.open-contracting.org/examples/releases/ocds-213czf-000-00002-01-tender-update.json#ocds-213czf-000-00002-01-tender-update",
                    "date": "2016-01-31T09:30:00Z",
                    "tag": [
                        "tenderUpdate"
                    ]
                },
                {
                    "url": "https://standard.open-contracting.org/examples/releases/ocds-213czf-000-00002-01-tender-amendment.json#ocds-213czf-000-00002-01-tender-amendment",
                    "date": "2016-02-05T10:30:00Z",
                    "tag": [
                        "tenderAmendment"
                    ]
                }
            ],
            "compiledRelease": {
                "tag": [
                    "compiled"
                ],
                "id": "ocds-213czf-000-00002-2016-03-03T09:30:00Z",
                "date": "2016-03-03T09:30:00Z",
                "ocid": "ocds-213czf-000-00002",
                "language": "en",
                "initiationType": "tender",
                "parties": [
                    {
                        "id": "GB-COH-09506232",
                        "name": "Open Data Services",
                        "identifier": {
                            "scheme": "GB-COH",
                            "id": "09506232",
                            "legalName": "Open Data Services Co-operative",
                            "uri": "https://opencorporates.com/companies/gb/09506232"
                        },
                        "roles": [
                            "buyer"
                        ]
                    }
                ],
                "buyer": {
                    "id": "GB-COH-09506232",
                    "name": "Open Data Services"
                },
                "tender": {
                    "id": "ocds-213czf-000-00002-01-tender",
                    "title": "Data merging tool",
                    "description": "Creation of a data merging tool. The tool should by written in Python. Proposals should be submitted by e-mail.",
                    "status": "active",
                    "value": {
                        "amount": 2000,
                        "currency": "USD"
                    },
                    "procurementMethod": "open",
                    "awardCriteria": "bestProposal",
                    "submissionMethod": [
                        "electronicSubmission"
                    ],
                    "tenderPeriod": {
                        "startDate": "2016-01-31T09:00:00Z",
                        "endDate": "2016-02-20T18:00:00Z"
                    },
                    "awardPeriod": {
                        "startDate": "2016-04-01T00:00:00Z",
                        "endDate": "2016-06-01T23:59:59Z"
                    },
                    "amendments": [
                        {
                            "id": "amendment-1",
                            "date": "2016-02-04T09:30:00Z",
                            "rationale": "Based on feedback from potential bidders, the total budget was increased by $1000, and the deadline extended",
                            "amendsReleaseID": "ocds-213czf-000-00002-01-tender",
                            "releaseID": "ocds-213czf-000-00002-01-tender-amendment"
                        }
                    ]
                },
                "awards": [
                    {
                        "id": "ocds-213czf-000-00002-award-supplier-one",
                        "title": "Award of contract to create the data merging tool.",
                        "description": "Supplier 1 has been commissioned to create the merge tool. A separate contract will be awarded to write the documentation",
                        "status": "active",
                        "date": "2016-03-01T09:30:00Z",
                        "value": {
                            "amount": 750,
                            "currency": "USD"
                        }
                    },
                    {
                        "id": "ocds-213czf-000-00002-award-supplier-two",
                        "title": "Award of contract to create the data merging tool.",
                        "description": "Supplier 2 has been commissioned to create the documentation. A separate contract will be awarded to create the tool",
                        "status": "active",
                        "date": "2016-03-03T09:30:00Z",
                        "value": {
                            "amount": 750,
                            "currency": "USD"
                        }
                    }
                ]
            },
            "versionedRelease": {
                "ocid": "ocds-213czf-000-00002",
                "language": [
                    {
                        "releaseID": "ocds-213czf-000-00002-01-tender",
                        "releaseDate": "2016-01-01T09:30:00Z",
                        "releaseTag": [
                            "tender"
                        ],
                        "value": "en"
                    }
                ],
                "initiationType": [
                    {
                        "releaseID": "ocds-213czf-000-00002-01-tender",
                        "releaseDate": "2016-01-01T09:30:00Z",
                        "releaseTag": [
                            "tender"
                        ],
                        "value": "tender"
                    }
                ],
                "parties": [
                    {
                        "id": "GB-COH-09506232",
                        "name": [
                            {
                                "releaseID": "ocds-213czf-000-00002-01-tender",
                                "releaseDate": "2016-01-01T09:30:00Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": "Open Data Services"
                            }
                        ],
                        "identifier": {
                            "scheme": [
                                {
                                    "releaseID": "ocds-213czf-000-00002-01-tender",
                                    "releaseDate": "2016-01-01T09:30:00Z",
                                    "releaseTag": [
                                        "tender"
                                    ],
                                    "value": "GB-COH"
                                }
                            ],
                            "id": [
                                {
                                    "releaseID": "ocds-213czf-000-00002-01-tender",
                                    "releaseDate": "2016-01-01T09:30:00Z",
                                    "releaseTag": [
                                        "tender"
                                    ],
                                    "value": "09506232"
                                }
                            ],
                            "legalName": [
                                {
                                    "releaseID": "ocds-213czf-000-00002-01-tender",
                                    "releaseDate": "2016-01-01T09:30:00Z",
                                    "releaseTag": [
                                        "tender"
                                    ],
                                    "value": "Open Data Services Co-operative"
                                }
                            ],
                            "uri": [
                                {
                                    "releaseID": "ocds-213czf-000-00002-01-tender",
                                    "releaseDate": "2016-01-01T09:30:00Z",
                                    "releaseTag": [
                                        "tender"
                                    ],
                                    "value": "https://opencorporates.com/companies/gb/09506232"
                                }
                            ]
                        },
                        "roles": [
                            {
                                "releaseID": "ocds-213czf-000-00002-01-tender",
                                "releaseDate": "2016-01-01T09:30:00Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": [
                                    "buyer"
                                ]
                            }
                        ]
                    }
                ],
                "buyer": {
                    "id": [
                        {
                            "releaseID": "ocds-213czf-000-00002-01-tender",
                            "releaseDate": "2016-01-01T09:30:00Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "GB-COH-09506232"
                        }
                    ],
                    "name": [
                        {
                            "releaseID": "ocds-213czf-000-00002-01-tender",
                            "releaseDate": "2016-01-01T09:30:00Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "Open Data Services"
                        }
                    ]
                },
                "tender": {
                    "id": [
                        {
                            "releaseID": "ocds-213czf-000-00002-01-tender",
                            "releaseDate": "2016-01-01T09:30:00Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "ocds-213czf-000-00002-01-tender"
                        }
                    ],
                    "title": [
                        {
                            "releaseID": "ocds-213czf-000-00002-01-tender",
                            "releaseDate": "2016-01-01T09:30:00Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "Data merging tool"
                        }
                    ],
                    "description": [
                        {
                            "releaseID": "ocds-213czf-000-00002-01-tender",
                            "releaseDate": "2016-01-01T09:30:00Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "Data merge tool."
                        },
                        {
                            "releaseID": "ocds-213czf-000-00002-01-tender-update",
                            "releaseDate": "2016-01-31T09:30:00Z",
                            "releaseTag": [
                                "tenderUpdate"
                            ],
                            "value": "Creation of a data merging tool. The tool should by written in Python. Proposals should be submitted by e-mail."
                        }
                    ],
                    "status": [
                        {
                            "releaseID": "ocds-213czf-000-00002-01-tender",
                            "releaseDate": "2016-01-01T09:30:00Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "active"
                        }
                    ],
                    "value": {
                        "amount": [
                            {
                                "releaseID": "ocds-213czf-000-00002-01-tender",
                                "releaseDate": "2016-01-01T09:30:00Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": 1000
                            },
                            {
                                "releaseID": "ocds-213czf-000-00002-01-tender-amendment",
                                "releaseDate": "2016-02-05T10:30:00Z",
                                "releaseTag": [
                                    "tenderAmendment"
                                ],
                                "value": 2000
                            }
                        ],
                        "currency": [
                            {
                                "releaseID": "ocds-213czf-000-00002-01-tender",
                                "releaseDate": "2016-01-01T09:30:00Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": "USD"
                            }
                        ]
                    },
                    "procurementMethod": [
                        {
                            "releaseID": "ocds-213czf-000-00002-01-tender",
                            "releaseDate": "2016-01-01T09:30:00Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "open"
                        }
                    ],
                    "awardCriteria": [
                        {
                            "releaseID": "ocds-213czf-000-00002-01-tender",
                            "releaseDate": "2016-01-01T09:30:00Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "bestProposal"
                        }
                    ],
                    "submissionMethod": [
                        {
                            "releaseID": "ocds-213czf-000-00002-01-tender",
                            "releaseDate": "2016-01-01T09:30:00Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": [
                                "electronicSubmission"
                            ]
                        }
                    ],
                    "tenderPeriod": {
                        "startDate": [
                            {
                                "releaseID": "ocds-213czf-000-00002-01-tender",
                                "releaseDate": "2016-01-01T09:30:00Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": "2016-01-31T09:00:00Z"
                            }
                        ],
                        "endDate": [
                            {
                                "releaseID": "ocds-213czf-000-00002-01-tender",
                                "releaseDate": "2016-01-01T09:30:00Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": "2016-02-15T18:00:00Z"
                            },
                            {
                                "releaseID": "ocds-213czf-000-00002-01-tender-amendment",
                                "releaseDate": "2016-02-05T10:30:00Z",
                                "releaseTag": [
                                    "tenderAmendment"
                                ],
                                "value": "2016-02-20T18:00:00Z"
                            }
                        ]
                    },
                    "awardPeriod": {
                        "startDate": [
                            {
                                "releaseID": "ocds-213czf-000-00002-01-tender",
                                "releaseDate": "2016-01-01T09:30:00Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": "2016-04-01T00:00:00Z"
                            }
                        ],
                        "endDate": [
                            {
                                "releaseID": "ocds-213czf-000-00002-01-tender",
                                "releaseDate": "2016-01-01T09:30:00Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": "2016-06-01T23:59:59Z"
                            }
                        ]
                    },
                    "amendments": [
                        {
                            "id": "amendment-1",
                            "date": [
                                {
                                    "releaseID": "ocds-213czf-000-00002-01-tender-amendment",
                                    "releaseDate": "2016-02-05T10:30:00Z",
                                    "releaseTag": [
                                        "tenderAmendment"
                                    ],
                                    "value": "2016-02-04T09:30:00Z"
                                }
                            ],
                            "rationale": [
                                {
                                    "releaseID": "ocds-213czf-000-00002-01-tender-amendment",
                                    "releaseDate": "2016-02-05T10:30:00Z",
                                    "releaseTag": [
                                        "tenderAmendment"
                                    ],
                                    "value": "Based on feedback from potential bidders, the total budget was increased by $1000, and the deadline extended"
                                }
                            ],
                            "amendsReleaseID": [
                                {
                                    "releaseID": "ocds-213czf-000-00002-01-tender-amendment",
                                    "releaseDate": "2016-02-05T10:30:00Z",
                                    "releaseTag": [
                                        "tenderAmendment"
                                    ],
                                    "value": "ocds-213czf-000-00002-01-tender"
                                }
                            ],
                            "releaseID": [
                                {
                                    "releaseID": "ocds-213czf-000-00002-01-tender-amendment",
                                    "releaseDate": "2016-02-05T10:30:00Z",
                                    "releaseTag": [
                                        "tenderAmendment"
                                    ],
                                    "value": "ocds-213czf-000-00002-01-tender-amendment"
                                }
                            ]
                        }
                    ]
                },
                "awards": [
                    {
                        "id": "ocds-213czf-000-00002-award-supplier-one",
                        "title": [
                            {
                                "releaseID": "ocds-213czf-000-00002-01-award1",
                                "releaseDate": "2016-03-01T09:30:00Z",
                                "releaseTag": [
                                    "award"
                                ],
                                "value": "Award of contract to create the data merging tool."
                            }
                        ],
                        "description": [
                            {
                                "releaseID": "ocds-213czf-000-00002-01-award1",
                                "releaseDate": "2016-03-01T09:30:00Z",
                                "releaseTag": [
                                    "award"
                                ],
                                "value": "Supplier 1 has been commissioned to create the merge tool. A separate contract will be awarded to write the documentation"
                            }
                        ],
                        "status": [
                            {
                                "releaseID": "ocds-213czf-000-00002-01-award1",
                                "releaseDate": "2016-03-01T09:30:00Z",
                                "releaseTag": [
                                    "award"
                                ],
                                "value": "active"
                            }
                        ],
                        "date": [
                            {
                                "releaseID": "ocds-213czf-000-00002-01-award1",
                                "releaseDate": "2016-03-01T09:30:00Z",
                                "releaseTag": [
                                    "award"
                                ],
                                "value": "2016-03-01T09:30:00Z"
                            }
                        ],
                        "value": {
                            "amount": [
                                {
                                    "releaseID": "ocds-213czf-000-00002-01-award1",
                                    "releaseDate": "2016-03-01T09:30:00Z",
                                    "releaseTag": [
                                        "award"
                                    ],
                                    "value": 750
                                }
                            ],
                            "currency": [
                                {
                                    "releaseID": "ocds-213czf-000-00002-01-award1",
                                    "releaseDate": "2016-03-01T09:30:00Z",
                                    "releaseTag": [
                                        "award"
                                    ],
                                    "value": "USD"
                                }
                            ]
                        }
                    },
                    {
                        "id": "ocds-213czf-000-00002-award-supplier-two",
                        "title": [
                            {
                                "releaseID": "ocds-213czf-000-00002-01-award2",
                                "releaseDate": "2016-03-03T09:30:00Z",
                                "releaseTag": [
                                    "award"
                                ],
                                "value": "Award of contract to create the data merging tool."
                            }
                        ],
                        "description": [
                            {
                                "releaseID": "ocds-213czf-000-00002-01-award2",
                                "releaseDate": "2016-03-03T09:30:00Z",
                                "releaseTag": [
                                    "award"
                                ],
                                "value": "Supplier 2 has been commissioned to create the documentation. A separate contract will be awarded to create the tool"
                            }
                        ],
                        "status": [
                            {
                                "releaseID": "ocds-213czf-000-00002-01-award2",
                                "releaseDate": "2016-03-03T09:30:00Z",
                                "releaseTag": [
                                    "award"
                                ],
                                "value": "active"
                            }
                        ],
                        "date": [
                            {
                                "releaseID": "ocds-213czf-000-00002-01-award2",
                                "releaseDate": "2016-03-03T09:30:00Z",
                                "releaseTag": [
                                    "award"
                                ],
                                "value": "2016-03-03T09:30:00Z"
                            }
                        ],
                        "value": {
                            "amount": [
                                {
                                    "releaseID": "ocds-213czf-000-00002-01-award2",
                                    "releaseDate": "2016-03-03T09:30:00Z",
                                    "releaseTag": [
                                        "award"
                                    ],
                                    "value": 750
                                }
                            ],
                            "currency": [
                                {
                                    "releaseID": "ocds-213czf-000-00002-01-award2",
                                    "releaseDate": "2016-03-03T09:30:00Z",
                                    "releaseTag": [
                                        "award"
                                    ],
                                    "value": "USD"
                                }
                            ]
                        }
                    }
                ]
            }
        }
    ]
}

Example 2: Deletion of fields and objects

Fields

A government agency in Colombia publishes a procurement opportunity, including information about the tender, as shown below.

After a few days, the officer in charge notices that the description of the tender is a duplication of the tender title and decides to leave the description field blank, judging that the tender/title field has all the information needed. A release with a 'tenderUpdate' tag is published, and the record for the process is updated.

In the final record, both the compiled and versioned releases show the changes. The tender/description field has disappeared from the compiledRelease, and the versionedRelease shows both its previous value and the null value used to delete the field. The entry with the null value can be used to determine when the field was deleted.

{
    "uri": "https://standard.open-contracting.org/examples/releases/ocds-k50g02-13-9-368828-tender.json",
    "publisher": {
        "name": "Colombia Compra Eficiente"
    },
    "publishedDate": "2013-07-28T09:40:10.000Z",
    "version": "1.1",
    "releases": [
        {
            "date": "2013-07-28T09:40:10.000Z",
            "language": "es",
            "ocid": "ocds-k50g02-13-9-368828",
            "id": "13-9-368828-tender",
            "tag": [
                "tender"
            ],
            "initiationType": "tender",
            "parties": [
                {
                    "name": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)",
                    "roles": [
                        "procuringEntity",
                        "buyer"
                    ],
                    "address": {
                        "countryName": "COLOMBIA",
                        "region": "Bogot\u00e1 D.C.",
                        "streetAddress": "Calle 26 No. 27-48",
                        "locality": "Bogot\u00e1 D.C."
                    },
                    "contactPoint": {
                        "email": "comando.ecarmeroguayabal@inpec.gov.co",
                        "telephone": "(8) 2530814",
                        "name": "DEISY ALEXANDRA GARAY"
                    },
                    "identifier": {
                        "scheme": "CO-RUE",
                        "id": "800215546",
                        "legalName": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)"
                    },
                    "id": "800215546"
                }
            ],
            "buyer": {
                "id": "800215546",
                "name": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)"
            },
            "tender": {
                "status": "active",
                "description": "ADQUISICION DE COLCHONETAS PARA LA DOTACION DESTINADOS A LA POBLACION INTERNA DEL EPMSC ARMERO GUAYABAL TOLIMA",
                "title": "ADQUISICION DE COLCHONETAS PARA LA DOTACION DESTINADOS A LA POBLACION INTERNA DEL EPMSC ARMERO GUAYABAL TOLIMA",
                "procurementMethod": "open",
                "procurementMethodDetails": "Subasta",
                "value": {
                    "amount": 6725000
                },
                "tenderPeriod": {
                    "startDate": "2013-08-01T09:00:00.000Z",
                    "durationInDays": 15
                },
                "submissionMethod": [
                    "inPerson"
                ],
                "submissionMethodDetails": "Municipio obtenci\u00f3n: Guayabal Municipio entrega: Guayabal Municipio ejecuci\u00f3n: No definido Lugar aclaraciones: No definido",
                "procuringEntity": {
                    "id": "800215546",
                    "name": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)"
                },
                "id": "13-9-368828"
            }
        }
    ]
}
{
    "uri": "https://standard.open-contracting.org/examples/releases/ocds-k50g02-13-9-368828-tenderUpdate.json",
    "publisher": {
        "name": "Colombia Compra Eficiente"
    },
    "publishedDate": "2013-07-30T09:00:10.000Z",
    "version": "1.1",
    "releases": [
        {
            "date": "2013-07-30T09:00:10.000Z",
            "language": "es",
            "ocid": "ocds-k50g02-13-9-368828",
            "id": "13-9-368828-tenderUpdate",
            "tag": [
                "tenderUpdate"
            ],
            "initiationType": "tender",
            "parties": [
                {
                    "name": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)",
                    "roles": [
                        "procuringEntity",
                        "buyer"
                    ],
                    "address": {
                        "countryName": "COLOMBIA",
                        "region": "Bogot\u00e1 D.C.",
                        "streetAddress": "Calle 26 No. 27-48",
                        "locality": "Bogot\u00e1 D.C."
                    },
                    "contactPoint": {
                        "email": "comando.ecarmeroguayabal@inpec.gov.co",
                        "telephone": "(8) 2530814",
                        "name": "DEISY ALEXANDRA GARAY"
                    },
                    "identifier": {
                        "scheme": "CO-RUE",
                        "id": "800215546",
                        "legalName": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)"
                    },
                    "id": "800215546"
                }
            ],
            "buyer": {
                "id": "800215546",
                "name": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)"
            },
            "tender": {
                "status": "active",
                "description": null,
                "title": "ADQUISICION DE COLCHONETAS PARA LA DOTACION DESTINADOS A LA POBLACION INTERNA DEL EPMSC ARMERO GUAYABAL TOLIMA",
                "procurementMethod": "open",
                "procurementMethodDetails": "Subasta",
                "value": {
                    "amount": 6725000
                },
                "tenderPeriod": {
                    "startDate": "2013-08-01T09:00:00.000Z",
                    "durationInDays": 15
                },
                "submissionMethod": [
                    "inPerson"
                ],
                "submissionMethodDetails": "Municipio obtenci\u00f3n: Guayabal Municipio entrega: Guayabal Municipio ejecuci\u00f3n: No definido Lugar aclaraciones: No definido",
                "procuringEntity": {
                    "id": "800215546",
                    "name": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)"
                },
                "id": "13-9-368828"
            }
        }
    ]
}
{
    "uri": "",
    "publisher": {
        "name": "Colombia Compra Eficiente"
    },
    "publishedDate": "2013-07-30T09:00:10.000Z",
    "version": "1.1",
    "packages": [
        "https://standard.open-contracting.org/examples/releases/ocds-k50g02-13-9-368828-tenderUpdate.json",
        "https://standard.open-contracting.org/examples/releases/ocds-k50g02-13-9-368828-tender.json"
    ],
    "records": [
        {
            "ocid": "ocds-k50g02-13-9-368828",
            "releases": [
                {
                    "date": "2013-07-30T09:00:10.000Z",
                    "language": "es",
                    "ocid": "ocds-k50g02-13-9-368828",
                    "id": "13-9-368828-tenderUpdate",
                    "tag": [
                        "tenderUpdate"
                    ],
                    "initiationType": "tender",
                    "parties": [
                        {
                            "name": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)",
                            "roles": [
                                "procuringEntity",
                                "buyer"
                            ],
                            "address": {
                                "countryName": "COLOMBIA",
                                "region": "Bogot\u00e1 D.C.",
                                "streetAddress": "Calle 26 No. 27-48",
                                "locality": "Bogot\u00e1 D.C."
                            },
                            "contactPoint": {
                                "email": "comando.ecarmeroguayabal@inpec.gov.co",
                                "telephone": "(8) 2530814",
                                "name": "DEISY ALEXANDRA GARAY"
                            },
                            "identifier": {
                                "scheme": "CO-RUE",
                                "id": "800215546",
                                "legalName": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)"
                            },
                            "id": "800215546"
                        }
                    ],
                    "buyer": {
                        "id": "800215546",
                        "name": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)"
                    },
                    "tender": {
                        "status": "active",
                        "description": null,
                        "title": "ADQUISICION DE COLCHONETAS PARA LA DOTACION DESTINADOS A LA POBLACION INTERNA DEL EPMSC ARMERO GUAYABAL TOLIMA",
                        "procurementMethod": "open",
                        "procurementMethodDetails": "Subasta",
                        "value": {
                            "amount": 6725000
                        },
                        "tenderPeriod": {
                            "startDate": "2013-08-01T09:00:00.000Z",
                            "durationInDays": 15
                        },
                        "submissionMethod": [
                            "inPerson"
                        ],
                        "submissionMethodDetails": "Municipio obtenci\u00f3n: Guayabal Municipio entrega: Guayabal Municipio ejecuci\u00f3n: No definido Lugar aclaraciones: No definido",
                        "procuringEntity": {
                            "id": "800215546",
                            "name": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)"
                        },
                        "id": "13-9-368828"
                    }
                },
                {
                    "date": "2013-07-28T09:40:10.000Z",
                    "language": "es",
                    "ocid": "ocds-k50g02-13-9-368828",
                    "id": "13-9-368828-tender",
                    "tag": [
                        "tender"
                    ],
                    "initiationType": "tender",
                    "parties": [
                        {
                            "name": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)",
                            "roles": [
                                "procuringEntity",
                                "buyer"
                            ],
                            "address": {
                                "countryName": "COLOMBIA",
                                "region": "Bogot\u00e1 D.C.",
                                "streetAddress": "Calle 26 No. 27-48",
                                "locality": "Bogot\u00e1 D.C."
                            },
                            "contactPoint": {
                                "email": "comando.ecarmeroguayabal@inpec.gov.co",
                                "telephone": "(8) 2530814",
                                "name": "DEISY ALEXANDRA GARAY"
                            },
                            "identifier": {
                                "scheme": "CO-RUE",
                                "id": "800215546",
                                "legalName": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)"
                            },
                            "id": "800215546"
                        }
                    ],
                    "buyer": {
                        "id": "800215546",
                        "name": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)"
                    },
                    "tender": {
                        "status": "active",
                        "description": "ADQUISICION DE COLCHONETAS PARA LA DOTACION DESTINADOS A LA POBLACION INTERNA DEL EPMSC ARMERO GUAYABAL TOLIMA",
                        "title": "ADQUISICION DE COLCHONETAS PARA LA DOTACION DESTINADOS A LA POBLACION INTERNA DEL EPMSC ARMERO GUAYABAL TOLIMA",
                        "procurementMethod": "open",
                        "procurementMethodDetails": "Subasta",
                        "value": {
                            "amount": 6725000
                        },
                        "tenderPeriod": {
                            "startDate": "2013-08-01T09:00:00.000Z",
                            "durationInDays": 15
                        },
                        "submissionMethod": [
                            "inPerson"
                        ],
                        "submissionMethodDetails": "Municipio obtenci\u00f3n: Guayabal Municipio entrega: Guayabal Municipio ejecuci\u00f3n: No definido Lugar aclaraciones: No definido",
                        "procuringEntity": {
                            "id": "800215546",
                            "name": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)"
                        },
                        "id": "13-9-368828"
                    }
                }
            ],
            "compiledRelease": {
                "tag": [
                    "compiled"
                ],
                "id": "ocds-k50g02-13-9-368828-2013-07-30T09:00:10.000Z",
                "date": "2013-07-30T09:00:10.000Z",
                "ocid": "ocds-k50g02-13-9-368828",
                "language": "es",
                "initiationType": "tender",
                "parties": [
                    {
                        "id": "800215546",
                        "name": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)",
                        "roles": [
                            "procuringEntity",
                            "buyer"
                        ],
                        "address": {
                            "countryName": "COLOMBIA",
                            "region": "Bogot\u00e1 D.C.",
                            "streetAddress": "Calle 26 No. 27-48",
                            "locality": "Bogot\u00e1 D.C."
                        },
                        "contactPoint": {
                            "email": "comando.ecarmeroguayabal@inpec.gov.co",
                            "telephone": "(8) 2530814",
                            "name": "DEISY ALEXANDRA GARAY"
                        },
                        "identifier": {
                            "scheme": "CO-RUE",
                            "id": "800215546",
                            "legalName": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)"
                        }
                    }
                ],
                "buyer": {
                    "id": "800215546",
                    "name": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)"
                },
                "tender": {
                    "status": "active",
                    "title": "ADQUISICION DE COLCHONETAS PARA LA DOTACION DESTINADOS A LA POBLACION INTERNA DEL EPMSC ARMERO GUAYABAL TOLIMA",
                    "procurementMethod": "open",
                    "procurementMethodDetails": "Subasta",
                    "value": {
                        "amount": 6725000
                    },
                    "tenderPeriod": {
                        "startDate": "2013-08-01T09:00:00.000Z",
                        "durationInDays": 15
                    },
                    "submissionMethod": [
                        "inPerson"
                    ],
                    "submissionMethodDetails": "Municipio obtenci\u00f3n: Guayabal Municipio entrega: Guayabal Municipio ejecuci\u00f3n: No definido Lugar aclaraciones: No definido",
                    "procuringEntity": {
                        "id": "800215546",
                        "name": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)"
                    },
                    "id": "13-9-368828"
                }
            },
            "versionedRelease": {
                "ocid": "ocds-k50g02-13-9-368828",
                "language": [
                    {
                        "releaseID": "13-9-368828-tender",
                        "releaseDate": "2013-07-28T09:40:10.000Z",
                        "releaseTag": [
                            "tender"
                        ],
                        "value": "es"
                    }
                ],
                "initiationType": [
                    {
                        "releaseID": "13-9-368828-tender",
                        "releaseDate": "2013-07-28T09:40:10.000Z",
                        "releaseTag": [
                            "tender"
                        ],
                        "value": "tender"
                    }
                ],
                "parties": [
                    {
                        "id": "800215546",
                        "name": [
                            {
                                "releaseID": "13-9-368828-tender",
                                "releaseDate": "2013-07-28T09:40:10.000Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)"
                            }
                        ],
                        "roles": [
                            {
                                "releaseID": "13-9-368828-tender",
                                "releaseDate": "2013-07-28T09:40:10.000Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": [
                                    "procuringEntity",
                                    "buyer"
                                ]
                            }
                        ],
                        "address": {
                            "countryName": [
                                {
                                    "releaseID": "13-9-368828-tender",
                                    "releaseDate": "2013-07-28T09:40:10.000Z",
                                    "releaseTag": [
                                        "tender"
                                    ],
                                    "value": "COLOMBIA"
                                }
                            ],
                            "region": [
                                {
                                    "releaseID": "13-9-368828-tender",
                                    "releaseDate": "2013-07-28T09:40:10.000Z",
                                    "releaseTag": [
                                        "tender"
                                    ],
                                    "value": "Bogot\u00e1 D.C."
                                }
                            ],
                            "streetAddress": [
                                {
                                    "releaseID": "13-9-368828-tender",
                                    "releaseDate": "2013-07-28T09:40:10.000Z",
                                    "releaseTag": [
                                        "tender"
                                    ],
                                    "value": "Calle 26 No. 27-48"
                                }
                            ],
                            "locality": [
                                {
                                    "releaseID": "13-9-368828-tender",
                                    "releaseDate": "2013-07-28T09:40:10.000Z",
                                    "releaseTag": [
                                        "tender"
                                    ],
                                    "value": "Bogot\u00e1 D.C."
                                }
                            ]
                        },
                        "contactPoint": {
                            "email": [
                                {
                                    "releaseID": "13-9-368828-tender",
                                    "releaseDate": "2013-07-28T09:40:10.000Z",
                                    "releaseTag": [
                                        "tender"
                                    ],
                                    "value": "comando.ecarmeroguayabal@inpec.gov.co"
                                }
                            ],
                            "telephone": [
                                {
                                    "releaseID": "13-9-368828-tender",
                                    "releaseDate": "2013-07-28T09:40:10.000Z",
                                    "releaseTag": [
                                        "tender"
                                    ],
                                    "value": "(8) 2530814"
                                }
                            ],
                            "name": [
                                {
                                    "releaseID": "13-9-368828-tender",
                                    "releaseDate": "2013-07-28T09:40:10.000Z",
                                    "releaseTag": [
                                        "tender"
                                    ],
                                    "value": "DEISY ALEXANDRA GARAY"
                                }
                            ]
                        },
                        "identifier": {
                            "scheme": [
                                {
                                    "releaseID": "13-9-368828-tender",
                                    "releaseDate": "2013-07-28T09:40:10.000Z",
                                    "releaseTag": [
                                        "tender"
                                    ],
                                    "value": "CO-RUE"
                                }
                            ],
                            "id": [
                                {
                                    "releaseID": "13-9-368828-tender",
                                    "releaseDate": "2013-07-28T09:40:10.000Z",
                                    "releaseTag": [
                                        "tender"
                                    ],
                                    "value": "800215546"
                                }
                            ],
                            "legalName": [
                                {
                                    "releaseID": "13-9-368828-tender",
                                    "releaseDate": "2013-07-28T09:40:10.000Z",
                                    "releaseTag": [
                                        "tender"
                                    ],
                                    "value": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)"
                                }
                            ]
                        }
                    }
                ],
                "buyer": {
                    "id": [
                        {
                            "releaseID": "13-9-368828-tender",
                            "releaseDate": "2013-07-28T09:40:10.000Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "800215546"
                        }
                    ],
                    "name": [
                        {
                            "releaseID": "13-9-368828-tender",
                            "releaseDate": "2013-07-28T09:40:10.000Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)"
                        }
                    ]
                },
                "tender": {
                    "status": [
                        {
                            "releaseID": "13-9-368828-tender",
                            "releaseDate": "2013-07-28T09:40:10.000Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "active"
                        }
                    ],
                    "description": [
                        {
                            "releaseID": "13-9-368828-tender",
                            "releaseDate": "2013-07-28T09:40:10.000Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "ADQUISICION DE COLCHONETAS PARA LA DOTACION DESTINADOS A LA POBLACION INTERNA DEL EPMSC ARMERO GUAYABAL TOLIMA"
                        },
                        {
                            "releaseID": "13-9-368828-tenderUpdate",
                            "releaseDate": "2013-07-30T09:00:10.000Z",
                            "releaseTag": [
                                "tenderUpdate"
                            ],
                            "value": null
                        }
                    ],
                    "title": [
                        {
                            "releaseID": "13-9-368828-tender",
                            "releaseDate": "2013-07-28T09:40:10.000Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "ADQUISICION DE COLCHONETAS PARA LA DOTACION DESTINADOS A LA POBLACION INTERNA DEL EPMSC ARMERO GUAYABAL TOLIMA"
                        }
                    ],
                    "procurementMethod": [
                        {
                            "releaseID": "13-9-368828-tender",
                            "releaseDate": "2013-07-28T09:40:10.000Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "open"
                        }
                    ],
                    "procurementMethodDetails": [
                        {
                            "releaseID": "13-9-368828-tender",
                            "releaseDate": "2013-07-28T09:40:10.000Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "Subasta"
                        }
                    ],
                    "value": {
                        "amount": [
                            {
                                "releaseID": "13-9-368828-tender",
                                "releaseDate": "2013-07-28T09:40:10.000Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": 6725000
                            }
                        ]
                    },
                    "tenderPeriod": {
                        "startDate": [
                            {
                                "releaseID": "13-9-368828-tender",
                                "releaseDate": "2013-07-28T09:40:10.000Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": "2013-08-01T09:00:00.000Z"
                            }
                        ],
                        "durationInDays": [
                            {
                                "releaseID": "13-9-368828-tender",
                                "releaseDate": "2013-07-28T09:40:10.000Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": 15
                            }
                        ]
                    },
                    "submissionMethod": [
                        {
                            "releaseID": "13-9-368828-tender",
                            "releaseDate": "2013-07-28T09:40:10.000Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": [
                                "inPerson"
                            ]
                        }
                    ],
                    "submissionMethodDetails": [
                        {
                            "releaseID": "13-9-368828-tender",
                            "releaseDate": "2013-07-28T09:40:10.000Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "Municipio obtenci\u00f3n: Guayabal Municipio entrega: Guayabal Municipio ejecuci\u00f3n: No definido Lugar aclaraciones: No definido"
                        }
                    ],
                    "procuringEntity": {
                        "id": [
                            {
                                "releaseID": "13-9-368828-tender",
                                "releaseDate": "2013-07-28T09:40:10.000Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": "800215546"
                            }
                        ],
                        "name": [
                            {
                                "releaseID": "13-9-368828-tender",
                                "releaseDate": "2013-07-28T09:40:10.000Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": "INSTITUTO NACIONAL PENITENCIARIO Y CARCELARIO (INPEC)"
                            }
                        ]
                    },
                    "id": [
                        {
                            "releaseID": "13-9-368828-tender",
                            "releaseDate": "2013-07-28T09:40:10.000Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "13-9-368828"
                        }
                    ]
                }
            }
        }
    ]
}

Objects

Another government agency in Colombia publishes a new procurement opportunity. Details are provided in an OCDS release, as shown below.

A few days after releasing the tender notice, the government agency receives feedback for potential bidders, and they realize that the estimated contract period set for the tender could be infeasible. They decide to instead negotiate the contract period with the awarded supplier, and they remove the contract period from the opportunity to avoid confusing potential bidders.

A release with a 'tenderAmendment' tag is published, in which both the startDate and endDate of the contractPeriod block have been set to null. Also, an amendments block is provided to explain the changes.

The final record is shown below. Note that the fields in the contractPeriod block have disappeared in the compiledRelease, and the versionedRelease contains the previous values.

{
    "uri": "https://standard.open-contracting.org/examples/releases/ocds-k50g02-11-13-651832-tender.json",
    "publisher": {
        "name": "Colombia Compra Eficiente"
    },
    "publishedDate": "2011-10-14T16:26:49.000Z",
    "version": "1.1",
    "releases": [
        {
            "date": "2011-10-14T16:26:49.000Z",
            "language": "es",
            "ocid": "ocds-k50g02-11-13-651832",
            "id": "11-13-651832-tender",
            "tag": [
                "tender"
            ],
            "initiationType": "tender",
            "parties": [
                {
                    "name": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES",
                    "roles": [
                        "procuringEntity",
                        "buyer"
                    ],
                    "address": {
                        "countryName": "COLOMBIA",
                        "region": "Cauca",
                        "locality": "Mercaderes"
                    },
                    "contactPoint": {
                        "email": "derazo@example.com",
                        "telephone": "152 2158746",
                        "name": "DIEGO EDUARDO ERAZO GUERRERO"
                    },
                    "identifier": {
                        "scheme": "CO-RUE",
                        "id": "890701933",
                        "legalName": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES"
                    },
                    "id": "890701933"
                }
            ],
            "buyer": {
                "id": "890701933",
                "name": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES"
            },
            "tender": {
                "id": "11-13-651832",
                "status": "active",
                "description": "CONSTRUCCI\u00d3N DE OBRAS DE REHABILITACI\u00d3N Y MANTENIMIENTO DE LA V\u00cdA CARRETEABLE: VEREDA CURACAS-VEREDA LA MONJITA, EN UNA EXTENSI\u00d3N DE SEIS (06) KIL\u00d3METROS EN MUNICIPIO DE MERCADERES CAUCA.",
                "procurementMethod": "open",
                "submissionMethodDetails": "Municipio obtenci\u00f3n: Mercaderes, Municipio entrega: Mercaderes, Municipio ejecuci\u00f3n: No definido, Lugar aclaraciones: No definido",
                "procurementMethodDetails": "Contrataci\u00f3n M\u00ednima Cuant\u00eda",
                "value": {
                    "amount": 5000000
                },
                "submissionMethod": [
                    "inPerson"
                ],
                "procuringEntity": {
                    "id": "890701933",
                    "name": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES"
                },
                "procurementMethodRationale": "Ninguna",
                "tenderPeriod": {
                    "startDate": "2011-10-14T16:22:00.000Z",
                    "endDate": "2011-10-20T00:00:00.000Z"
                },
                "contractPeriod": {
                    "startDate": "2011-11-20T09:00:00.000Z",
                    "endDate": "2012-01-31T17:00:00.000Z"
                }
            }
        }
    ]
}
{
    "uri": "https://standard.open-contracting.org/examples/releases/ocds-k50g02-11-13-651832-tenderUpdate.json",
    "publisher": {
        "name": "Colombia Compra Eficiente"
    },
    "publishedDate": "2011-10-18T08:54:21.000Z",
    "version": "1.1",
    "releases": [
        {
            "date": "2011-10-18T08:54:21.000Z",
            "language": "es",
            "ocid": "ocds-k50g02-11-13-651832",
            "id": "11-13-651832-tenderUpdate",
            "tag": [
                "tenderAmendment"
            ],
            "initiationType": "tender",
            "parties": [
                {
                    "name": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES",
                    "roles": [
                        "procuringEntity",
                        "buyer"
                    ],
                    "address": {
                        "countryName": "COLOMBIA",
                        "region": "Cauca",
                        "locality": "Mercaderes"
                    },
                    "contactPoint": {
                        "email": "derazo@example.com",
                        "telephone": "152 2158746",
                        "name": "DIEGO EDUARDO ERAZO GUERRERO"
                    },
                    "identifier": {
                        "scheme": "CO-RUE",
                        "id": "890701933",
                        "legalName": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES"
                    },
                    "id": "890701933"
                }
            ],
            "buyer": {
                "id": "890701933",
                "name": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES"
            },
            "tender": {
                "id": "11-13-651832",
                "status": "active",
                "description": "CONSTRUCCI\u00d3N DE OBRAS DE REHABILITACI\u00d3N Y MANTENIMIENTO DE LA V\u00cdA CARRETEABLE: VEREDA CURACAS-VEREDA LA MONJITA, EN UNA EXTENSI\u00d3N DE SEIS (06) KIL\u00d3METROS EN MUNICIPIO DE MERCADERES CAUCA.",
                "procurementMethod": "open",
                "submissionMethodDetails": "Municipio obtenci\u00f3n: Mercaderes, Municipio entrega: Mercaderes, Municipio ejecuci\u00f3n: No definido, Lugar aclaraciones: No definido",
                "procurementMethodDetails": "Contrataci\u00f3n M\u00ednima Cuant\u00eda",
                "value": {
                    "amount": 5000000
                },
                "submissionMethod": [
                    "inPerson"
                ],
                "procuringEntity": {
                    "id": "890701933",
                    "name": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES"
                },
                "procurementMethodRationale": "Ninguna",
                "tenderPeriod": {
                    "startDate": "2011-10-14T16:22:00.000Z",
                    "endDate": "2011-10-26T00:00:00.000Z"
                },
                "contractPeriod": {
                    "startDate": null,
                    "endDate": null
                },
                "hasEnquiries": true,
                "amendments": [
                    {
                        "id": "01",
                        "date": "2011-10-18T08:54:21.000Z",
                        "amendsReleaseId": "11-13-651832-tender",
                        "description": "Se ha removido el periodo estimado de contrato y se ha extendido el periodo de presentaci\u00f3n de ofertas.",
                        "rationale": "Luego de recibir consultas de potenciales proveedores, se ha decidido omitir el periodo estimado de contrato y dejarlo abierto a negociaciones con el proveedor adjudicado."
                    }
                ]
            }
        }
    ]
}
{
    "uri": "",
    "publisher": {
        "name": "Colombia Compra Eficiente"
    },
    "publishedDate": "",
    "version": "1.1",
    "packages": [
        "https://standard.open-contracting.org/examples/releases/ocds-k50g02-11-13-651832-tenderUpdate.json",
        "https://standard.open-contracting.org/examples/releases/ocds-k50g02-11-13-651832-tender.json"
    ],
    "records": [
        {
            "ocid": "ocds-k50g02-11-13-651832",
            "releases": [
                {
                    "date": "2011-10-18T08:54:21.000Z",
                    "language": "es",
                    "ocid": "ocds-k50g02-11-13-651832",
                    "id": "11-13-651832-tenderUpdate",
                    "tag": [
                        "tenderAmendment"
                    ],
                    "initiationType": "tender",
                    "parties": [
                        {
                            "name": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES",
                            "roles": [
                                "procuringEntity",
                                "buyer"
                            ],
                            "address": {
                                "countryName": "COLOMBIA",
                                "region": "Cauca",
                                "locality": "Mercaderes"
                            },
                            "contactPoint": {
                                "email": "derazo@example.com",
                                "telephone": "152 2158746",
                                "name": "DIEGO EDUARDO ERAZO GUERRERO"
                            },
                            "identifier": {
                                "scheme": "CO-RUE",
                                "id": "890701933",
                                "legalName": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES"
                            },
                            "id": "890701933"
                        }
                    ],
                    "buyer": {
                        "id": "890701933",
                        "name": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES"
                    },
                    "tender": {
                        "id": "11-13-651832",
                        "status": "active",
                        "description": "CONSTRUCCI\u00d3N DE OBRAS DE REHABILITACI\u00d3N Y MANTENIMIENTO DE LA V\u00cdA CARRETEABLE: VEREDA CURACAS-VEREDA LA MONJITA, EN UNA EXTENSI\u00d3N DE SEIS (06) KIL\u00d3METROS EN MUNICIPIO DE MERCADERES CAUCA.",
                        "procurementMethod": "open",
                        "submissionMethodDetails": "Municipio obtenci\u00f3n: Mercaderes, Municipio entrega: Mercaderes, Municipio ejecuci\u00f3n: No definido, Lugar aclaraciones: No definido",
                        "procurementMethodDetails": "Contrataci\u00f3n M\u00ednima Cuant\u00eda",
                        "value": {
                            "amount": 5000000
                        },
                        "submissionMethod": [
                            "inPerson"
                        ],
                        "procuringEntity": {
                            "id": "890701933",
                            "name": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES"
                        },
                        "procurementMethodRationale": "Ninguna",
                        "tenderPeriod": {
                            "startDate": "2011-10-14T16:22:00.000Z",
                            "endDate": "2011-10-26T00:00:00.000Z"
                        },
                        "contractPeriod": {
                            "startDate": null,
                            "endDate": null
                        },
                        "hasEnquiries": true,
                        "amendments": [
                            {
                                "id": "01",
                                "date": "2011-10-18T08:54:21.000Z",
                                "amendsReleaseId": "11-13-651832-tender",
                                "description": "Se ha removido el periodo estimado de contrato y se ha extendido el periodo de presentaci\u00f3n de ofertas.",
                                "rationale": "Luego de recibir consultas de potenciales proveedores, se ha decidido omitir el periodo estimado de contrato y dejarlo abierto a negociaciones con el proveedor adjudicado."
                            }
                        ]
                    }
                },
                {
                    "date": "2011-10-14T16:26:49.000Z",
                    "language": "es",
                    "ocid": "ocds-k50g02-11-13-651832",
                    "id": "11-13-651832-tender",
                    "tag": [
                        "tender"
                    ],
                    "initiationType": "tender",
                    "parties": [
                        {
                            "name": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES",
                            "roles": [
                                "procuringEntity",
                                "buyer"
                            ],
                            "address": {
                                "countryName": "COLOMBIA",
                                "region": "Cauca",
                                "locality": "Mercaderes"
                            },
                            "contactPoint": {
                                "email": "derazo@example.com",
                                "telephone": "152 2158746",
                                "name": "DIEGO EDUARDO ERAZO GUERRERO"
                            },
                            "identifier": {
                                "scheme": "CO-RUE",
                                "id": "890701933",
                                "legalName": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES"
                            },
                            "id": "890701933"
                        }
                    ],
                    "buyer": {
                        "id": "890701933",
                        "name": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES"
                    },
                    "tender": {
                        "id": "11-13-651832",
                        "status": "active",
                        "description": "CONSTRUCCI\u00d3N DE OBRAS DE REHABILITACI\u00d3N Y MANTENIMIENTO DE LA V\u00cdA CARRETEABLE: VEREDA CURACAS-VEREDA LA MONJITA, EN UNA EXTENSI\u00d3N DE SEIS (06) KIL\u00d3METROS EN MUNICIPIO DE MERCADERES CAUCA.",
                        "procurementMethod": "open",
                        "submissionMethodDetails": "Municipio obtenci\u00f3n: Mercaderes, Municipio entrega: Mercaderes, Municipio ejecuci\u00f3n: No definido, Lugar aclaraciones: No definido",
                        "procurementMethodDetails": "Contrataci\u00f3n M\u00ednima Cuant\u00eda",
                        "value": {
                            "amount": 5000000
                        },
                        "submissionMethod": [
                            "inPerson"
                        ],
                        "procuringEntity": {
                            "id": "890701933",
                            "name": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES"
                        },
                        "procurementMethodRationale": "Ninguna",
                        "tenderPeriod": {
                            "startDate": "2011-10-14T16:22:00.000Z",
                            "endDate": "2011-10-20T00:00:00.000Z"
                        },
                        "contractPeriod": {
                            "startDate": "2011-11-20T09:00:00.000Z",
                            "endDate": "2012-01-31T17:00:00.000Z"
                        }
                    }
                }
            ],
            "compiledRelease": {
                "tag": [
                    "compiled"
                ],
                "id": "ocds-k50g02-11-13-651832-2011-10-18T08:54:21.000Z",
                "date": "2011-10-18T08:54:21.000Z",
                "ocid": "ocds-k50g02-11-13-651832",
                "language": "es",
                "initiationType": "tender",
                "parties": [
                    {
                        "id": "890701933",
                        "name": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES",
                        "roles": [
                            "procuringEntity",
                            "buyer"
                        ],
                        "address": {
                            "countryName": "COLOMBIA",
                            "region": "Cauca",
                            "locality": "Mercaderes"
                        },
                        "contactPoint": {
                            "email": "derazo@example.com",
                            "telephone": "152 2158746",
                            "name": "DIEGO EDUARDO ERAZO GUERRERO"
                        },
                        "identifier": {
                            "scheme": "CO-RUE",
                            "id": "890701933",
                            "legalName": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES"
                        }
                    }
                ],
                "buyer": {
                    "id": "890701933",
                    "name": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES"
                },
                "tender": {
                    "id": "11-13-651832",
                    "status": "active",
                    "description": "CONSTRUCCI\u00d3N DE OBRAS DE REHABILITACI\u00d3N Y MANTENIMIENTO DE LA V\u00cdA CARRETEABLE: VEREDA CURACAS-VEREDA LA MONJITA, EN UNA EXTENSI\u00d3N DE SEIS (06) KIL\u00d3METROS EN MUNICIPIO DE MERCADERES CAUCA.",
                    "procurementMethod": "open",
                    "submissionMethodDetails": "Municipio obtenci\u00f3n: Mercaderes, Municipio entrega: Mercaderes, Municipio ejecuci\u00f3n: No definido, Lugar aclaraciones: No definido",
                    "procurementMethodDetails": "Contrataci\u00f3n M\u00ednima Cuant\u00eda",
                    "value": {
                        "amount": 5000000
                    },
                    "submissionMethod": [
                        "inPerson"
                    ],
                    "procuringEntity": {
                        "id": "890701933",
                        "name": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES"
                    },
                    "procurementMethodRationale": "Ninguna",
                    "tenderPeriod": {
                        "startDate": "2011-10-14T16:22:00.000Z",
                        "endDate": "2011-10-26T00:00:00.000Z"
                    },
                    "contractPeriod": {},
                    "hasEnquiries": true,
                    "amendments": [
                        {
                            "id": "01",
                            "date": "2011-10-18T08:54:21.000Z",
                            "amendsReleaseId": "11-13-651832-tender",
                            "description": "Se ha removido el periodo estimado de contrato y se ha extendido el periodo de presentaci\u00f3n de ofertas.",
                            "rationale": "Luego de recibir consultas de potenciales proveedores, se ha decidido omitir el periodo estimado de contrato y dejarlo abierto a negociaciones con el proveedor adjudicado."
                        }
                    ]
                }
            },
            "versionedRelease": {
                "ocid": "ocds-k50g02-11-13-651832",
                "language": [
                    {
                        "releaseID": "11-13-651832-tender",
                        "releaseDate": "2011-10-14T16:26:49.000Z",
                        "releaseTag": [
                            "tender"
                        ],
                        "value": "es"
                    }
                ],
                "initiationType": [
                    {
                        "releaseID": "11-13-651832-tender",
                        "releaseDate": "2011-10-14T16:26:49.000Z",
                        "releaseTag": [
                            "tender"
                        ],
                        "value": "tender"
                    }
                ],
                "parties": [
                    {
                        "id": "890701933",
                        "name": [
                            {
                                "releaseID": "11-13-651832-tender",
                                "releaseDate": "2011-10-14T16:26:49.000Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES"
                            }
                        ],
                        "roles": [
                            {
                                "releaseID": "11-13-651832-tender",
                                "releaseDate": "2011-10-14T16:26:49.000Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": [
                                    "procuringEntity",
                                    "buyer"
                                ]
                            }
                        ],
                        "address": {
                            "countryName": [
                                {
                                    "releaseID": "11-13-651832-tender",
                                    "releaseDate": "2011-10-14T16:26:49.000Z",
                                    "releaseTag": [
                                        "tender"
                                    ],
                                    "value": "COLOMBIA"
                                }
                            ],
                            "region": [
                                {
                                    "releaseID": "11-13-651832-tender",
                                    "releaseDate": "2011-10-14T16:26:49.000Z",
                                    "releaseTag": [
                                        "tender"
                                    ],
                                    "value": "Cauca"
                                }
                            ],
                            "locality": [
                                {
                                    "releaseID": "11-13-651832-tender",
                                    "releaseDate": "2011-10-14T16:26:49.000Z",
                                    "releaseTag": [
                                        "tender"
                                    ],
                                    "value": "Mercaderes"
                                }
                            ]
                        },
                        "contactPoint": {
                            "email": [
                                {
                                    "releaseID": "11-13-651832-tender",
                                    "releaseDate": "2011-10-14T16:26:49.000Z",
                                    "releaseTag": [
                                        "tender"
                                    ],
                                    "value": "derazo@example.com"
                                }
                            ],
                            "telephone": [
                                {
                                    "releaseID": "11-13-651832-tender",
                                    "releaseDate": "2011-10-14T16:26:49.000Z",
                                    "releaseTag": [
                                        "tender"
                                    ],
                                    "value": "152 2158746"
                                }
                            ],
                            "name": [
                                {
                                    "releaseID": "11-13-651832-tender",
                                    "releaseDate": "2011-10-14T16:26:49.000Z",
                                    "releaseTag": [
                                        "tender"
                                    ],
                                    "value": "DIEGO EDUARDO ERAZO GUERRERO"
                                }
                            ]
                        },
                        "identifier": {
                            "scheme": [
                                {
                                    "releaseID": "11-13-651832-tender",
                                    "releaseDate": "2011-10-14T16:26:49.000Z",
                                    "releaseTag": [
                                        "tender"
                                    ],
                                    "value": "CO-RUE"
                                }
                            ],
                            "id": [
                                {
                                    "releaseID": "11-13-651832-tender",
                                    "releaseDate": "2011-10-14T16:26:49.000Z",
                                    "releaseTag": [
                                        "tender"
                                    ],
                                    "value": "890701933"
                                }
                            ],
                            "legalName": [
                                {
                                    "releaseID": "11-13-651832-tender",
                                    "releaseDate": "2011-10-14T16:26:49.000Z",
                                    "releaseTag": [
                                        "tender"
                                    ],
                                    "value": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES"
                                }
                            ]
                        }
                    }
                ],
                "buyer": {
                    "id": [
                        {
                            "releaseID": "11-13-651832-tender",
                            "releaseDate": "2011-10-14T16:26:49.000Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "890701933"
                        }
                    ],
                    "name": [
                        {
                            "releaseID": "11-13-651832-tender",
                            "releaseDate": "2011-10-14T16:26:49.000Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES"
                        }
                    ]
                },
                "tender": {
                    "id": [
                        {
                            "releaseID": "11-13-651832-tender",
                            "releaseDate": "2011-10-14T16:26:49.000Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "11-13-651832"
                        }
                    ],
                    "status": [
                        {
                            "releaseID": "11-13-651832-tender",
                            "releaseDate": "2011-10-14T16:26:49.000Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "active"
                        }
                    ],
                    "description": [
                        {
                            "releaseID": "11-13-651832-tender",
                            "releaseDate": "2011-10-14T16:26:49.000Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "CONSTRUCCI\u00d3N DE OBRAS DE REHABILITACI\u00d3N Y MANTENIMIENTO DE LA V\u00cdA CARRETEABLE: VEREDA CURACAS-VEREDA LA MONJITA, EN UNA EXTENSI\u00d3N DE SEIS (06) KIL\u00d3METROS EN MUNICIPIO DE MERCADERES CAUCA."
                        }
                    ],
                    "procurementMethod": [
                        {
                            "releaseID": "11-13-651832-tender",
                            "releaseDate": "2011-10-14T16:26:49.000Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "open"
                        }
                    ],
                    "submissionMethodDetails": [
                        {
                            "releaseID": "11-13-651832-tender",
                            "releaseDate": "2011-10-14T16:26:49.000Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "Municipio obtenci\u00f3n: Mercaderes, Municipio entrega: Mercaderes, Municipio ejecuci\u00f3n: No definido, Lugar aclaraciones: No definido"
                        }
                    ],
                    "procurementMethodDetails": [
                        {
                            "releaseID": "11-13-651832-tender",
                            "releaseDate": "2011-10-14T16:26:49.000Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "Contrataci\u00f3n M\u00ednima Cuant\u00eda"
                        }
                    ],
                    "value": {
                        "amount": [
                            {
                                "releaseID": "11-13-651832-tender",
                                "releaseDate": "2011-10-14T16:26:49.000Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": 5000000
                            }
                        ]
                    },
                    "submissionMethod": [
                        {
                            "releaseID": "11-13-651832-tender",
                            "releaseDate": "2011-10-14T16:26:49.000Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": [
                                "inPerson"
                            ]
                        }
                    ],
                    "procuringEntity": {
                        "id": [
                            {
                                "releaseID": "11-13-651832-tender",
                                "releaseDate": "2011-10-14T16:26:49.000Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": "890701933"
                            }
                        ],
                        "name": [
                            {
                                "releaseID": "11-13-651832-tender",
                                "releaseDate": "2011-10-14T16:26:49.000Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": "CAUCA - ALCALD\u00cdA MUNICIPIO DE MERCADERES"
                            }
                        ]
                    },
                    "procurementMethodRationale": [
                        {
                            "releaseID": "11-13-651832-tender",
                            "releaseDate": "2011-10-14T16:26:49.000Z",
                            "releaseTag": [
                                "tender"
                            ],
                            "value": "Ninguna"
                        }
                    ],
                    "tenderPeriod": {
                        "startDate": [
                            {
                                "releaseID": "11-13-651832-tender",
                                "releaseDate": "2011-10-14T16:26:49.000Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": "2011-10-14T16:22:00.000Z"
                            }
                        ],
                        "endDate": [
                            {
                                "releaseID": "11-13-651832-tender",
                                "releaseDate": "2011-10-14T16:26:49.000Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": "2011-10-20T00:00:00.000Z"
                            },
                            {
                                "releaseID": "11-13-651832-tenderUpdate",
                                "releaseDate": "2011-10-18T08:54:21.000Z",
                                "releaseTag": [
                                    "tenderAmendment"
                                ],
                                "value": "2011-10-26T00:00:00.000Z"
                            }
                        ]
                    },
                    "contractPeriod": {
                        "startDate": [
                            {
                                "releaseID": "11-13-651832-tender",
                                "releaseDate": "2011-10-14T16:26:49.000Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": "2011-11-20T09:00:00.000Z"
                            },
                            {
                                "releaseID": "11-13-651832-tenderUpdate",
                                "releaseDate": "2011-10-18T08:54:21.000Z",
                                "releaseTag": [
                                    "tenderAmendment"
                                ],
                                "value": null
                            }
                        ],
                        "endDate": [
                            {
                                "releaseID": "11-13-651832-tender",
                                "releaseDate": "2011-10-14T16:26:49.000Z",
                                "releaseTag": [
                                    "tender"
                                ],
                                "value": "2012-01-31T17:00:00.000Z"
                            },
                            {
                                "releaseID": "11-13-651832-tenderUpdate",
                                "releaseDate": "2011-10-18T08:54:21.000Z",
                                "releaseTag": [
                                    "tenderAmendment"
                                ],
                                "value": null
                            }
                        ]
                    },
                    "hasEnquiries": [
                        {
                            "releaseID": "11-13-651832-tenderUpdate",
                            "releaseDate": "2011-10-18T08:54:21.000Z",
                            "releaseTag": [
                                "tenderAmendment"
                            ],
                            "value": true
                        }
                    ],
                    "amendments": [
                        {
                            "id": "01",
                            "date": [
                                {
                                    "releaseID": "11-13-651832-tenderUpdate",
                                    "releaseDate": "2011-10-18T08:54:21.000Z",
                                    "releaseTag": [
                                        "tenderAmendment"
                                    ],
                                    "value": "2011-10-18T08:54:21.000Z"
                                }
                            ],
                            "amendsReleaseId": [
                                {
                                    "releaseID": "11-13-651832-tenderUpdate",
                                    "releaseDate": "2011-10-18T08:54:21.000Z",
                                    "releaseTag": [
                                        "tenderAmendment"
                                    ],
                                    "value": "11-13-651832-tender"
                                }
                            ],
                            "description": [
                                {
                                    "releaseID": "11-13-651832-tenderUpdate",
                                    "releaseDate": "2011-10-18T08:54:21.000Z",
                                    "releaseTag": [
                                        "tenderAmendment"
                                    ],
                                    "value": "Se ha removido el periodo estimado de contrato y se ha extendido el periodo de presentaci\u00f3n de ofertas."
                                }
                            ],
                            "rationale": [
                                {
                                    "releaseID": "11-13-651832-tenderUpdate",
                                    "releaseDate": "2011-10-18T08:54:21.000Z",
                                    "releaseTag": [
                                        "tenderAmendment"
                                    ],
                                    "value": "Luego de recibir consultas de potenciales proveedores, se ha decidido omitir el periodo estimado de contrato y dejarlo abierto a negociaciones con el proveedor adjudicado."
                                }
                            ]
                        }
                    ]
                }
            }
        }
    ]
}

Example 3: Deletion of array items

The public procurement authority in Zambia publishes an award notice, as well as an OCDS release with an 'award' tag. A NGO collects the individual releases published by the procurement authority on a weekly basis to merge into their own records, which they use to display information on their website.

Two weeks later, the authority publishes a new release. Due to negotiations with the awarded supplier, one of the items in the award is being deleted and two new ones have been added to replace it, as show below. The two new items have been added at the end of the items array, and the item to remove has all its fields set to null.

The NGO generates a record. In the record, all the fields of the removed item have disappeared, and only its id is left.

{
    "uri": "https://standard.open-contracting.org/examples/releases/ocds-23g63a01-200502-award.json",
    "publisher": {
        "name": "Zambia Public Procurement Authority"
    },
    "publishedDate": "2018-12-31T23:00:00Z",
    "version": "1.1",
    "releases": [
        {
            "language": "en",
            "ocid": "ocds-23g63a01-200502",
            "id": "ocds-23g63a01-200502-award",
            "tag": [
                "award"
            ],
            "initiationType": "tender",
            "date": "2018-12-31T23:00:00Z",
            "parties": [
                {
                    "id": "ZM-PCR-001",
                    "contactPoint": {
                        "url": "http://www.Zamtel.zm",
                        "faxNumber": "+260211256622",
                        "telephone": "+260211333152",
                        "email": "Customerservice@Zamtel.co.zm"
                    },
                    "identifier": {
                        "id": "001",
                        "scheme": "ZM-PCR",
                        "legalName": "Zambia Telecommunications Company Limited"
                    },
                    "name": "Zambia Telecommunications Company Limited",
                    "address": {
                        "postalCode": "37000",
                        "countryName": "Zambia",
                        "region": "ZM",
                        "streetAddress": "Zamtel House, Corner Church and Chilubi Roads",
                        "locality": "Lusaka"
                    },
                    "roles": [
                        "buyer"
                    ]
                },
                {
                    "id": "ZM-PCR-104500",
                    "name": "Joziel General Dealers Ltd",
                    "contactPoint": {
                        "telephone": "+260978552867"
                    },
                    "identifier": {
                        "scheme": "ZM-PCR",
                        "id": "104500",
                        "uri": "https://www.pacra.org.zm/#/p/pacrasearch/",
                        "legalName": "Joziel General Dealers Ltd"
                    },
                    "address": {
                        "postalCode": "",
                        "countryName": "Zambia",
                        "region": "ZM",
                        "streetAddress": "Plot 17 Chaholi Road Rhodes Park",
                        "locality": "Lusaka"
                    },
                    "roles": [
                        "supplier"
                    ]
                }
            ],
            "buyer": {
                "id": "ZM-PCR-001",
                "name": "Zambia Telecommunications Company Limited"
            },
            "awards": [
                {
                    "status": "active",
                    "description": "SUPPLY AND DELIVERY OF VARIOUS STATIONERY",
                    "title": "SUPPLY AND DELIVERY OF VARIOUS STATIONERY",
                    "items": [
                        {
                            "unit": {
                                "name": "each"
                            },
                            "quantity": 30,
                            "description": "Notebooks",
                            "classification": {
                                "scheme": "UNSPSC",
                                "description": "Paper pads and notebooks",
                                "id": "14111514"
                            },
                            "id": "14111514"
                        },
                        {
                            "unit": {
                                "name": "Ream"
                            },
                            "quantity": 130,
                            "description": "Printing and writing paper",
                            "classification": {
                                "scheme": "UNSPSC",
                                "description": "Printing and writing paper",
                                "id": "14111500"
                            },
                            "id": "14111500"
                        },
                        {
                            "unit": {
                                "name": "packet"
                            },
                            "quantity": 100,
                            "description": "Self adhesive note paper",
                            "classification": {
                                "scheme": "UNSPSC",
                                "description": "Self adhesive note paper",
                                "id": "14111530"
                            },
                            "id": "14111530"
                        },
                        {
                            "unit": {
                                "name": "each"
                            },
                            "quantity": 200,
                            "description": "Folders",
                            "classification": {
                                "scheme": "UNSPSC",
                                "description": "Folders",
                                "id": "44122011"
                            },
                            "id": "44122011"
                        }
                    ],
                    "suppliers": [
                        {
                            "id": "ZM-PCR-104500",
                            "name": "Joziel General Dealers Ltd"
                        }
                    ],
                    "value": {
                        "currency": "ZMW",
                        "amount": 13363.23
                    },
                    "date": "2018-12-31T06:40:57Z",
                    "id": "1201"
                }
            ]
        }
    ]
}
{
    "uri": "https://standard.open-contracting.org/examples/releases/ocds-23g63a01-200502-awardAmendment.json",
    "publisher": {
        "name": "Zambia Public Procurement Authority"
    },
    "publishedDate": "2019-01-21T09:00:00Z",
    "version": "1.1",
    "releases": [
        {
            "language": "en",
            "ocid": "ocds-23g63a01-200502",
            "id": "ocds-23g63a01-200502-awardAmendment",
            "tag": [
                "awardAmendment"
            ],
            "initiationType": "tender",
            "date": "2019-01-21T09:00:00Z",
            "parties": [
                {
                    "id": "ZM-PCR-001",
                    "contactPoint": {
                        "url": "http://www.Zamtel.zm",
                        "faxNumber": "+260211256622",
                        "telephone": "+260211333152",
                        "email": "Customerservice@Zamtel.co.zm"
                    },
                    "identifier": {
                        "id": "001",
                        "scheme": "ZM-PCR",
                        "legalName": "Zambia Telecommunications Company Limited"
                    },
                    "name": "Zambia Telecommunications Company Limited",
                    "address": {
                        "postalCode": "37000",
                        "countryName": "Zambia",
                        "region": "ZM",
                        "streetAddress": "Zamtel House, Corner Church and Chilubi Roads",
                        "locality": "Lusaka"
                    },
                    "roles": [
                        "buyer"
                    ]
                },
                {
                    "id": "ZM-PCR-104500",
                    "name": "Joziel General Dealers Ltd",
                    "contactPoint": {
                        "telephone": "+260978552867"
                    },
                    "identifier": {
                        "scheme": "ZM-PCR",
                        "id": "104500",
                        "uri": "https://www.pacra.org.zm/#/p/pacrasearch/",
                        "legalName": "Joziel General Dealers Ltd"
                    },
                    "address": {
                        "postalCode": "",
                        "countryName": "Zambia",
                        "region": "ZM",
                        "streetAddress": "Plot 17 Chaholi Road Rhodes Park",
                        "locality": "Lusaka"
                    },
                    "roles": [
                        "supplier"
                    ]
                }
            ],
            "buyer": {
                "id": "ZM-PCR-001",
                "name": "Zambia Telecommunications Company Limited"
            },
            "awards": [
                {
                    "status": "active",
                    "description": "SUPPLY AND DELIVERY OF VARIOUS STATIONERY",
                    "title": "SUPPLY AND DELIVERY OF VARIOUS STATIONERY",
                    "items": [
                        {
                            "unit": {
                                "name": "each"
                            },
                            "quantity": 30,
                            "description": "Notebooks",
                            "classification": {
                                "scheme": "UNSPSC",
                                "description": "Paper pads and notebooks",
                                "id": "14111514"
                            },
                            "id": "14111514"
                        },
                        {
                            "unit": {
                                "name": null
                            },
                            "quantity": null,
                            "description": null,
                            "classification": {
                                "scheme": null,
                                "description": null,
                                "id": null
                            },
                            "id": "14111500"
                        },
                        {
                            "unit": {
                                "name": "packet"
                            },
                            "quantity": 100,
                            "description": "Self adhesive note paper",
                            "classification": {
                                "scheme": "UNSPSC",
                                "description": "Self adhesive note paper",
                                "id": "14111530"
                            },
                            "id": "14111530"
                        },
                        {
                            "unit": {
                                "name": "each"
                            },
                            "quantity": 200,
                            "description": "Folders",
                            "classification": {
                                "scheme": "UNSPSC",
                                "description": "Folders",
                                "id": "44122011"
                            },
                            "id": "44122011"
                        },
                        {
                            "unit": {
                                "name": "Ream"
                            },
                            "quantity": 150,
                            "description": "Computer printout paper",
                            "classification": {
                                "scheme": "UNSPSC",
                                "description": "Computer printout paper",
                                "id": "14111506"
                            },
                            "id": "14111506"
                        },
                        {
                            "unit": {
                                "name": "Ream"
                            },
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                                    "releaseDate": "2018-12-31T23:00:00Z",
                                    "releaseTag": [
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                            ]
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                        ]
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                ],
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                            "releaseTag": [
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                                ],
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                            }
                        ],
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                                            "releaseTag": [
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                                            ],
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                                        }
                                    ]
                                },
                                "quantity": [
                                    {
                                        "releaseID": "ocds-23g63a01-200502-award",
                                        "releaseDate": "2018-12-31T23:00:00Z",
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                                    }
                                ],
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                                        "releaseDate": "2018-12-31T23:00:00Z",
                                        "releaseTag": [
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                                        ],
                                        "value": "Self adhesive note paper"
                                    }
                                ],
                                "classification": {
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                                        {
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                                            ],
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                                        }
                                    ],
                                    "description": [
                                        {
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                                            "releaseDate": "2018-12-31T23:00:00Z",
                                            "releaseTag": [
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                                            ],
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                                        }
                                    ],
                                    "id": [
                                        {
                                            "releaseID": "ocds-23g63a01-200502-award",
                                            "releaseDate": "2018-12-31T23:00:00Z",
                                            "releaseTag": [
                                                "award"
                                            ],
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                                        }
                                    ]
                                }
                            },
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                                        {
                                            "releaseID": "ocds-23g63a01-200502-award",
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                                            "releaseTag": [
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                                            ],
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                                        }
                                    ]
                                },
                                "quantity": [
                                    {
                                        "releaseID": "ocds-23g63a01-200502-award",
                                        "releaseDate": "2018-12-31T23:00:00Z",
                                        "releaseTag": [
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                                        ],
                                        "value": 200
                                    }
                                ],
                                "description": [
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                                        "releaseID": "ocds-23g63a01-200502-award",
                                        "releaseDate": "2018-12-31T23:00:00Z",
                                        "releaseTag": [
                                            "award"
                                        ],
                                        "value": "Folders"
                                    }
                                ],
                                "classification": {
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                                            "releaseID": "ocds-23g63a01-200502-award",
                                            "releaseDate": "2018-12-31T23:00:00Z",
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                                            ],
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                                        }
                                    ],
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                                        {
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                                            "releaseDate": "2018-12-31T23:00:00Z",
                                            "releaseTag": [
                                                "award"
                                            ],
                                            "value": "Folders"
                                        }
                                    ],
                                    "id": [
                                        {
                                            "releaseID": "ocds-23g63a01-200502-award",
                                            "releaseDate": "2018-12-31T23:00:00Z",
                                            "releaseTag": [
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                                            ],
                                            "value": "44122011"
                                        }
                                    ]
                                }
                            },
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                                            "releaseTag": [
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                                            ],
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                                        }
                                    ]
                                },
                                "quantity": [
                                    {
                                        "releaseID": "ocds-23g63a01-200502-awardAmendment",
                                        "releaseDate": "2019-01-21T09:00:00Z",
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                                        "releaseDate": "2019-01-21T09:00:00Z",
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                                        ],
                                        "value": "Computer printout paper"
                                    }
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                                            "releaseTag": [
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                                            ],
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                                    ],
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                                        {
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                                            "releaseDate": "2019-01-21T09:00:00Z",
                                            "releaseTag": [
                                                "awardAmendment"
                                            ],
                                            "value": "Computer printout paper"
                                        }
                                    ],
                                    "id": [
                                        {
                                            "releaseID": "ocds-23g63a01-200502-awardAmendment",
                                            "releaseDate": "2019-01-21T09:00:00Z",
                                            "releaseTag": [
                                                "awardAmendment"
                                            ],
                                            "value": "14111506"
                                        }
                                    ]
                                }
                            },
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                                "unit": {
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                                            "releaseTag": [
                                                "awardAmendment"
                                            ],
                                            "value": "Ream"
                                        }
                                    ]
                                },
                                "quantity": [
                                    {
                                        "releaseID": "ocds-23g63a01-200502-awardAmendment",
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                                ],
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                                        "value": "Writing paper"
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                                    ],
                                    "description": [
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                                            "releaseDate": "2019-01-21T09:00:00Z",
                                            "releaseTag": [
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                                            ],
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                                    ],
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                                        }
                                    ]
                                }
                            }
                        ],
                        "suppliers": [
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                                "name": [
                                    {
                                        "releaseID": "ocds-23g63a01-200502-award",
                                        "releaseDate": "2018-12-31T23:00:00Z",
                                        "releaseTag": [
                                            "award"
                                        ],
                                        "value": "Joziel General Dealers Ltd"
                                    }
                                ]
                            }
                        ],
                        "value": {
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                                {
                                    "releaseID": "ocds-23g63a01-200502-award",
                                    "releaseDate": "2018-12-31T23:00:00Z",
                                    "releaseTag": [
                                        "award"
                                    ],
                                    "value": "ZMW"
                                }
                            ],
                            "amount": [
                                {
                                    "releaseID": "ocds-23g63a01-200502-award",
                                    "releaseDate": "2018-12-31T23:00:00Z",
                                    "releaseTag": [
                                        "award"
                                    ],
                                    "value": 13363.23
                                },
                                {
                                    "releaseID": "ocds-23g63a01-200502-awardAmendment",
                                    "releaseDate": "2019-01-21T09:00:00Z",
                                    "releaseTag": [
                                        "awardAmendment"
                                    ],
                                    "value": 13452.0
                                }
                            ]
                        },
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                            {
                                "releaseID": "ocds-23g63a01-200502-award",
                                "releaseDate": "2018-12-31T23:00:00Z",
                                "releaseTag": [
                                    "award"
                                ],
                                "value": "2018-12-31T06:40:57Z"
                            }
                        ],
                        "amendments": [
                            {
                                "id": "001",
                                "description": [
                                    {
                                        "releaseID": "ocds-23g63a01-200502-awardAmendment",
                                        "releaseDate": "2019-01-21T09:00:00Z",
                                        "releaseTag": [
                                            "awardAmendment"
                                        ],
                                        "value": "One awarded item has been removed in favor of other two ones."
                                    }
                                ],
                                "rationale": [
                                    {
                                        "releaseID": "ocds-23g63a01-200502-awardAmendment",
                                        "releaseDate": "2019-01-21T09:00:00Z",
                                        "releaseTag": [
                                            "awardAmendment"
                                        ],
                                        "value": "Items have been changed after negociations with the awarded supplier."
                                    }
                                ],
                                "amendsReleaseID": [
                                    {
                                        "releaseID": "ocds-23g63a01-200502-awardAmendment",
                                        "releaseDate": "2019-01-21T09:00:00Z",
                                        "releaseTag": [
                                            "awardAmendment"
                                        ],
                                        "value": "ocds-23g63a01-200502-award"
                                    }
                                ]
                            }
                        ]
                    }
                ]
            }
        }
    ]
}

Note

The current merge routine does not include a strategy to completely remove an entry from an array. We invite discussion on how to remove objects from arrays in issue #232.