Record Reference

Whereas there can be multiple releases about a contracting process, there should be a single record per contracting process, aggregating all the releases available for the contracting process.

Note: If any conflicts are found between this text, and the text within the schema, the schema takes precedence.

Browsing the schema

This page presents the record package schema as tables. You can also download the canonical version of the record package schema as JSON Schema, or view it in an interactive browser.

Package metadata

Records must be published within a record package. The record package provides metadata about the record(s) that it contains.

Title

Description

Type

Format

Required

uri

string

uri

Required

Package identifier

The URI of this package that identifies it uniquely in the world.

version

string

Required

OCDS schema version

The version of the OCDS schema used in this package, expressed as major.minor For example: 1.0 or 1.1

extensions

array[string]

OCDS extensions

An array of OCDS extensions used in this package, in which each array item is the URL of an extension.json file.

publisher

object

Required

Publisher

Information to uniquely identify the publisher of this package.

publisher/name

string

Required

Name

The name of the organization or department responsible for publishing this data.

publisher/scheme

[string, null]

Scheme

The scheme that holds the unique identifiers used to identify the item being identified.

publisher/uid

[string, null]

uid

The unique ID for this entity under the given ID scheme.

publisher/uri

[string, null]

uri

URI

A URI to identify the publisher.

license

[string, null]

uri

License

A link to the license that applies to the data in this package. A Public Domain Dedication or Open Definition Conformant license is recommended. The canonical URI of the license should be used. Documents linked from this file may be under other license conditions.

publicationPolicy

[string, null]

uri

Publication policy

A link to a document describing the publishers publication policy.

publishedDate

string

date-time

Required

Published date

The date that this package was published. If this package is generated 'on demand', this date should reflect the date of the last change to the underlying contents of the package.

packages

array[string]

Packages

A list of URIs of all the release packages that were used to create this record package.

records

array[Record]

Records

The records for this data package.

See record

See the licensing guidance for more details on selecting a license, and publishing license information.

See the publication policy guidance for more details on what to include in a publication policy.

The record package metadata has two differences from the release package metadata:

  • Instead of a releases array, a record package has a records array containing one or more records.

  • A record package has a packages array, to link to any release packages that were used to prepare the records.

The following example demonstrates all package metadata and record fields.

{
    "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"
                                }
                            ]
                        }
                    }
                ]
            }
        }
    ]
}

Record structure

A record must contain an ocid and all releases about the contracting process. As such, a record functions as an index of all releases about a contracting process.

A record should contain a compiledRelease object, which represents the state of the contracting process at the time of the record's publication.

A record may contain a versionedRelease object, which aggregates, into a single object, all values of all fields from all releases. The versioned release is designed to make it easy to see how values change from one release to another, and will often be generated by data users, rather than by publishers.

Releases

Each release in a record can be provided as either a linked release or an embedded release.

Linked releases

A linked release follows a simple schema:

Title

Description

Type

Format

Required

url

[string, null]

uri

Required

Release URL

The URL of the release which contains the URL of the package with the release id appended using a fragment identifier e.g. https://standard.open-contracting.org/1.1/en/examples/tender.json#ocds-213czf-000-00001

date

string

date-time

Required

Release Date

The date of the release. It should match the value of the date field of the release. This is used to sort the releases in the list in chronological order.

tag

array[string]

Release Tag

The tags of the release. It should match the value of the tag field of the release. This provides additional context when reviewing a record to see what types of releases are included for this ocid.

For each url value, it must be possible for a consuming application to retrieve the release package at the URL and identify the release within it. Since a release package can contain multiple releases, for a linked release to identify a specific release via its url field, the id of the release must be appended to the release package URL using a fragment identifier.

The following example demonstrates the use of linked releases.

{
    "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"
                        }
                    ]
                }
            }
        ]
    }
}

Above, the first linked release has a url value of https://standard.open-contracting.org/examples/releases/ocds-213czf-000-00002-01-award1.json#ocds-213czf-000-00002-01-award1. The first part (https://standard.open-contracting.org/examples/releases/ocds-213czf-000-00002-01-award1.json) is the URL of the release package, and the fragment identifier (ocds-213czf-000-00002-01-award1) is the id of the release.

Release id values are only required to be unique within the scope of a contracting process: that is, within the scope of an ocid value. As such, a consuming application needs to use that fragment identifier in combination with the ocid of the record in order to identify the matching release within the release package.

Embedded releases

An embedded release follows the release schema. In other words, instead of linking to a release within a release package as above, that release is entirely included in the record.

The following example demonstrates the use of embedded releases.

{
    "compiledRelease": {
        "awards": [
            {
                "contractPeriod": {
                    "endDate": "2011-08-01T23:59:00Z",
                    "startDate": "2010-07-01T00:00:00Z"
                },
                "date": "2010-05-10T10:30:00Z",
                "description": "AnyCorp Ltd has been awarded the contract to build new cycle lanes in the centre of town.",
                "documents": [
                    {
                        "datePublished": "2010-05-10T10:30:00Z",
                        "description": "Award of contract to build new cycle lanes in the centre of town to AnyCorp Ltd.",
                        "documentType": "notice",
                        "format": "text/html",
                        "id": "0007",
                        "language": "en",
                        "title": "Award notice",
                        "url": "http://example.com/tender-notices/ocds-213czf-000-00001-04.html"
                    }
                ],
                "id": "ocds-213czf-000-00001-award-01",
                "items": [
                    {
                        "additionalClassifications": [
                            {
                                "description": "Cycle path construction work",
                                "id": "45233162-2",
                                "scheme": "CPV",
                                "uri": "http://cpv.data.ac.uk/code-45233162.html"
                            }
                        ],
                        "classification": {
                            "description": "Construction work for highways",
                            "id": "45233130",
                            "scheme": "CPV",
                            "uri": "http://cpv.data.ac.uk/code-45233130"
                        },
                        "description": "string",
                        "id": "0001",
                        "quantity": 8,
                        "unit": {
                            "name": "Miles",
                            "value": {
                                "amount": 137000,
                                "currency": "GBP"
                            }
                        }
                    }
                ],
                "status": "active",
                "suppliers": [
                    {
                        "id": "GB-COH-1234567844",
                        "name": "AnyCorp Cycle Provision"
                    }
                ],
                "title": "Award of contract to build new cycle lanes in the centre of town.",
                "value": {
                    "amount": 11000000,
                    "currency": "GBP"
                }
            }
        ],
        "buyer": {
            "id": "GB-LAC-E09000003",
            "name": "London Borough of Barnet"
        },
        "contracts": [
            {
                "awardID": "ocds-213czf-000-00001-award-01",
                "dateSigned": "2015-06-10T14:23:12Z",
                "description": "Contract monitoring for cycle lane construction.",
                "documents": [
                    {
                        "datePublished": "2015-06-10T16:43:12Z",
                        "description": "The Signed Contract for Cycle Path Construction",
                        "documentType": "contractSigned",
                        "format": "application/pdf",
                        "id": "0008",
                        "language": "en",
                        "title": "Signed Contract",
                        "url": "http://example.com/contracts/ocds-213czf-000-00001"
                    },
                    {
                        "datePublished": "2010-12-15T15:34:02Z",
                        "description": "Physical progress report for cycle path construction",
                        "documentType": "physicalProcessReport",
                        "format": "application/pdf",
                        "id": "0009",
                        "language": "en",
                        "title": "Progress report",
                        "url": "http://example.com/reports/ocds-213czf-000-00001/cycle-path-01.pdf"
                    }
                ],
                "id": "ocds-213czf-000-00001-contract-01",
                "implementation": {
                    "transactions": [
                        {
                            "date": "2010-08-01T00:00:00Z",
                            "id": "ocds-213czf-000-00001-1",
                            "payee": {
                                "id": "GB-COH-1234567844",
                                "name": "AnyCorp Ltd"
                            },
                            "payer": {
                                "id": "GB-LAC-E09000003",
                                "name": "London Borough of Barnet"
                            },
                            "source": "https://openspending.org/uk-barnet-spending/",
                            "uri": "https://openspending.org/uk-barnet-spending/transaction/asd9235qaghvs1059620ywhgai",
                            "value": {
                                "amount": 500000,
                                "currency": "GBP"
                            }
                        },
                        {
                            "date": "2010-10-01T00:00:00Z",
                            "id": "ocds-213czf-000-00001-2",
                            "payee": {
                                "id": "GB-COH-1234567844",
                                "name": "AnyCorp Ltd"
                            },
                            "payer": {
                                "id": "GB-LAC-E09000003",
                                "name": "London Borough of Barnet"
                            },
                            "source": "https://openspending.org/uk-barnet-spending/",
                            "uri": "https://openspending.org/uk-barnet-spending/transaction/asd9235qaghvs105962as0012",
                            "value": {
                                "amount": 100000,
                                "currency": "GBP"
                            }
                        }
                    ]
                },
                "items": [
                    {
                        "additionalClassifications": [
                            {
                                "description": "Cycle path construction work",
                                "id": "45233162-2",
                                "scheme": "CPV",
                                "uri": "http://cpv.data.ac.uk/code-45233162.html"
                            }
                        ],
                        "classification": {
                            "description": "Construction work for highways",
                            "id": "45233130",
                            "scheme": "CPV",
                            "uri": "http://cpv.data.ac.uk/code-45233130"
                        },
                        "description": "string",
                        "id": "0001",
                        "quantity": 8,
                        "unit": {
                            "name": "Miles",
                            "value": {
                                "amount": 137000,
                                "currency": "GBP"
                            }
                        }
                    }
                ],
                "period": {
                    "endDate": "2011-08-01T23:59:00Z",
                    "startDate": "2010-07-01T00:00:00Z"
                },
                "status": "active",
                "title": "Contract to build new cycle lanes in the centre of town.",
                "value": {
                    "amount": 11000000,
                    "currency": "GBP"
                }
            }
        ],
        "date": "2011-01-10T09:30:00Z",
        "id": "ocds-213czf-000-00001-06-implementation",
        "initiationType": "tender",
        "language": "en",
        "ocid": "ocds-213czf-000-00001",
        "parties": [
            {
                "address": {
                    "countryName": "United Kingdom",
                    "locality": "London",
                    "postalCode": "N11 1NP",
                    "region": "London",
                    "streetAddress": "4, North London Business Park, Oakleigh Rd S"
                },
                "contactPoint": {
                    "email": "procurement-team@example.com",
                    "faxNumber": "01234 345 345",
                    "name": "Procurement Team",
                    "telephone": "01234 345 346",
                    "url": "http://example.com/contact/"
                },
                "id": "GB-LAC-E09000003",
                "identifier": {
                    "id": "E09000003",
                    "legalName": "London Borough of Barnet",
                    "scheme": "GB-LAC",
                    "uri": "http://www.barnet.gov.uk/"
                },
                "name": "London Borough of Barnet",
                "roles": [
                    "buyer",
                    "buyer"
                ]
            },
            {
                "additionalIdentifiers": [
                    {
                        "id": "987654321",
                        "scheme": "GB-VAT"
                    }
                ],
                "address": {
                    "countryName": "United Kingdom",
                    "locality": "Anytown",
                    "postalCode": "AN1 1TN",
                    "region": "AnyCounty",
                    "streetAddress": "100 Anytown Lane"
                },
                "contactPoint": {
                    "email": "contracts@anycorp.example",
                    "faxNumber": "12345 456 343",
                    "name": "Contracts Team",
                    "telephone": "12345 456 343"
                },
                "id": "GB-COH-1234567844",
                "identifier": {
                    "id": "1234567844",
                    "legalName": "AnyCorp Ltd",
                    "scheme": "GB-COH",
                    "uri": "http://www.anycorp.example"
                },
                "name": "AnyCorp Cycle Provision",
                "roles": [
                    "supplier"
                ]
            }
        ],
        "planning": {
            "budget": {
                "amount": {
                    "amount": 6700000.0,
                    "currency": "GBP"
                },
                "description": "Budget allocation for highway maintenance, aligned with 2015 strategic plan. ",
                "id": "6801ad388f3a38b7740dde20108c58b35984ee91",
                "project": "Central Junction Cycle Scheme",
                "projectID": "SP001",
                "source": "https://openspending.org/uk-barnet-budget/entries/6801ad388f3a38b7740dde20108c58b35984ee91",
                "uri": "https://openspending.org/uk-barnet-budget/entries/6801ad388f3a38b7740dde20108c58b35984ee91"
            },
            "documents": [
                {
                    "datePublished": "2009-01-05T00:00:00Z",
                    "description": "The overall strategic framework for procurement to enhance cycle provision.",
                    "documentType": "procurementPlan",
                    "format": "application/pdf",
                    "id": "0001",
                    "language": "en",
                    "title": "Area Wide Cycle Improvements - Procurement Plan",
                    "url": "http://example.com/opencontracting/documents/planning/highways/procurementPlan.pdf"
                },
                {
                    "datePublished": "2009-01-15T00:00:00Z",
                    "description": "Needs assessment for provision for cyclists in the centre of town.",
                    "documentType": "needsAssessment",
                    "format": "application/pdf",
                    "id": "0002",
                    "language": "en",
                    "title": "Cycle provision - Needs Assessment",
                    "url": "http://example.com/opencontracting/documents/ocds-213czf-000-00001/needsAssessment.pdf"
                }
            ],
            "rationale": "The 2009 Strategic Plan identifies a need for an improved cycle route in the centre of town."
        },
        "tag": [
            "compiled"
        ],
        "tender": {
            "amendments": [
                {
                    "amendsReleaseID": "ocds-213czf-000-00001-02-tender",
                    "date": "2010-03-20T09:45:00Z",
                    "description": "Following the enquiry period, enquiries were received and responses to questions asked have been published. No changes to the overall tender details were made.",
                    "id": "update-1",
                    "rationale": "Update following enquiries.",
                    "releaseID": "ocds-213czf-000-00001-03-tenderUpdate"
                },
                {
                    "amendsReleaseID": "ocds-213czf-000-00001-02-tender",
                    "date": "2010-03-20T10:45:00Z",
                    "description": "Following the enquiry period, a decision was made to increase the maximum value by 10%.",
                    "id": "amendment-1",
                    "rationale": "Revised value",
                    "releaseID": "ocds-213czf-000-00001-03-tenderAmendment"
                }
            ],
            "awardCriteria": "bestProposal",
            "awardCriteriaDetails": "The best proposal, subject to value for money requirements, will be accepted.",
            "awardPeriod": {
                "endDate": "2011-08-01T23:59:59Z",
                "startDate": "2010-06-01T00:00:00Z"
            },
            "description": "Tenders solicited for work to build new cycle lanes in the centre of town.",
            "documents": [
                {
                    "dateModified": "2015-02-15T00:00:00Z",
                    "datePublished": "2015-02-15T00:00:00Z",
                    "description": "A consultation document inviting citizen input into cycle provision.",
                    "format": "text/html",
                    "id": "0003",
                    "language": "en",
                    "title": "Consultation on cycle provision",
                    "url": "http://example.com/consultations/cycle-provision/"
                },
                {
                    "datePublished": "2015-02-15T00:00:00Z",
                    "description": "A map showing areas affected by the planned highway updates. Available from local libraries.",
                    "format": "offline/print",
                    "id": "0004",
                    "language": "en",
                    "title": "Map of affected areas"
                },
                {
                    "datePublished": "2010-03-01T09:00:00Z",
                    "description": "Official tender notice.",
                    "documentType": "notice",
                    "format": "text/html",
                    "id": "0005",
                    "language": "en",
                    "title": "Tender Notice",
                    "url": "http://example.com/tender-notices/ocds-213czf-000-00001-01.html"
                },
                {
                    "datePublished": "2010-03-20T11:30:15Z",
                    "description": "Responses to enquiries asked by interested parties.",
                    "documentType": "enquiryResponses",
                    "format": "text/html",
                    "id": "0006",
                    "language": "en",
                    "title": "Enquiry Responses",
                    "url": "http://example.com/enquiry-response/ocds-213czf-000-00001-01.html"
                }
            ],
            "enquiryPeriod": {
                "endDate": "2010-03-14T17:30:00Z",
                "startDate": "2010-03-01T09:00:00Z"
            },
            "hasEnquiries": true,
            "id": "ocds-213czf-000-00001-01-tender",
            "items": [
                {
                    "additionalClassifications": [
                        {
                            "description": "Cycle path construction work",
                            "id": "45233162-2",
                            "scheme": "CPV",
                            "uri": "http://cpv.data.ac.uk/code-45233162.html"
                        }
                    ],
                    "classification": {
                        "description": "Construction work for highways",
                        "id": "45233130",
                        "scheme": "CPV",
                        "uri": "http://cpv.data.ac.uk/code-45233130"
                    },
                    "description": "string",
                    "id": "0001",
                    "quantity": 8,
                    "unit": {
                        "name": "Miles",
                        "value": {
                            "amount": 120000,
                            "currency": "GBP"
                        }
                    }
                }
            ],
            "milestones": [
                {
                    "description": "A consultation period is open for citizen input to shape the final plans.",
                    "dueDate": "2015-04-15T17:00:00Z",
                    "id": "0001",
                    "title": "Consultation Period"
                }
            ],
            "minValue": {
                "amount": 600000,
                "currency": "GBP"
            },
            "procurementMethod": "open",
            "procurementMethodRationale": "An open competitive tender is required by EU Rules",
            "procuringEntity": {
                "id": "GB-LAC-E09000003",
                "name": "London Borough of Barnet"
            },
            "status": "active",
            "submissionMethod": [
                "electronicSubmission"
            ],
            "submissionMethodDetails": "Submit through the online portal at http://example.com/submissions/ocds-213czf-000-00001-01/",
            "tenderPeriod": {
                "endDate": "2011-04-01T18:00:00Z",
                "startDate": "2010-03-01T09:00:00Z"
            },
            "title": "Planned cycle lane improvements",
            "value": {
                "amount": 1210000,
                "currency": "GBP"
            }
        }
    },
    "ocid": "ocds-213czf-000-00001",
    "releases": [
        {
            "ocid": "ocds-213czf-000-00001",
            "id": "ocds-213czf-000-00001-01-planning",
            "date": "2009-03-15T14:45:00Z",
            "language": "en",
            "tag": [
                "planning"
            ],
            "initiationType": "tender",
            "parties": [
                {
                    "identifier": {
                        "scheme": "GB-LAC",
                        "id": "E09000003",
                        "legalName": "London Borough of Barnet",
                        "uri": "http://www.barnet.gov.uk/"
                    },
                    "name": "London Borough of Barnet",
                    "address": {
                        "streetAddress": "4, North London Business Park, Oakleigh Rd S",
                        "locality": "London",
                        "region": "London",
                        "postalCode": "N11 1NP",
                        "countryName": "United Kingdom"
                    },
                    "contactPoint": {
                        "name": "Procurement Team",
                        "email": "procurement-team@example.com",
                        "telephone": "01234 345 346",
                        "faxNumber": "01234 345 345",
                        "url": "http://example.com/contact/"
                    },
                    "roles": [
                        "procuringEntity",
                        "buyer"
                    ],
                    "id": "GB-LAC-E09000003"
                }
            ],
            "buyer": {
                "id": "GB-LAC-E09000003",
                "name": "London Borough of Barnet"
            },
            "planning": {
                "budget": {
                    "source": "https://openspending.org/uk-barnet-budget/entries/6801ad388f3a38b7740dde20108c58b35984ee91",
                    "id": "6801ad388f3a38b7740dde20108c58b35984ee91",
                    "description": "Budget allocation for highway maintenance, aligned with 2015 strategic plan. ",
                    "amount": {
                        "amount": 6700000.0,
                        "currency": "GBP"
                    },
                    "project": "Central Junction Cycle Scheme",
                    "projectID": "SP001",
                    "uri": "https://openspending.org/uk-barnet-budget/entries/6801ad388f3a38b7740dde20108c58b35984ee91"
                },
                "rationale": "The 2009 Strategic Plan identifies a need for an improved cycle route in the centre of town.",
                "documents": [
                    {
                        "id": "0001",
                        "documentType": "procurementPlan",
                        "title": "Area Wide Cycle Improvements - Procurement Plan",
                        "description": "The overall strategic framework for procurement to enhance cycle provision.",
                        "url": "http://example.com/opencontracting/documents/planning/highways/procurementPlan.pdf",
                        "datePublished": "2009-01-05T00:00:00Z",
                        "format": "application/pdf",
                        "language": "en"
                    },
                    {
                        "id": "0002",
                        "documentType": "needsAssessment",
                        "title": "Cycle provision - Needs Assessment",
                        "description": "Needs assessment for provision for cyclists in the centre of town.",
                        "url": "http://example.com/opencontracting/documents/ocds-213czf-000-00001/needsAssessment.pdf",
                        "datePublished": "2009-01-15T00:00:00Z",
                        "format": "application/pdf",
                        "language": "en"
                    }
                ]
            },
            "tender": {
                "id": "ocds-213czf-000-00001-01-planning",
                "title": "Planned cycle lane improvements",
                "description": "The authority plans to tender for improvements to the cycle lane in early 2010. This notice provides advanced notice of the intention to tender, and details to upcoming consultation events.",
                "status": "planned",
                "items": [
                    {
                        "id": "0001",
                        "description": "string",
                        "classification": {
                            "scheme": "CPV",
                            "id": "45233130",
                            "description": "Construction work for highways",
                            "uri": "http://cpv.data.ac.uk/code-45233130"
                        },
                        "additionalClassifications": [
                            {
                                "scheme": "CPV",
                                "id": "45233162-2",
                                "description": "Cycle path construction work",
                                "uri": "http://cpv.data.ac.uk/code-45233162.html"
                            }
                        ],
                        "quantity": 10,
                        "unit": {
                            "name": "Miles",
                            "value": {
                                "amount": 100000,
                                "currency": "GBP"
                            }
                        }
                    }
                ],
                "minValue": {
                    "amount": 500000,
                    "currency": "GBP"
                },
                "value": {
                    "amount": 1000000,
                    "currency": "GBP"
                },
                "procurementMethod": "open",
                "procurementMethodRationale": "An open competitive tender is required by EU Rules",
                "awardCriteria": "bestProposal",
                "awardCriteriaDetails": "The best proposal, subject to value for money requirements, will be accepted.",
                "tenderPeriod": {
                    "startDate": "2010-02-01T00:00:00Z"
                },
                "awardPeriod": {
                    "startDate": "2010-06-01T00:00:00Z",
                    "endDate": "2011-06-01T23:59:59Z"
                },
                "procuringEntity": {
                    "id": "GB-LAC-E09000003",
                    "name": "London Borough of Barnet"
                },
                "documents": [
                    {
                        "id": "0003",
                        "title": "Consultation on cycle provision",
                        "description": "A consultation document inviting citizen input into cycle provision.",
                        "url": "http://example.com/consultations/cycle-provision/",
                        "datePublished": "2015-02-15T00:00:00Z",
                        "dateModified": "2015-02-15T00:00:00Z",
                        "format": "text/html",
                        "language": "en"
                    },
                    {
                        "id": "0004",
                        "title": "Map of affected areas",
                        "description": "A map showing areas affected by the planned highway updates. Available from local libraries.",
                        "datePublished": "2015-02-15T00:00:00Z",
                        "format": "offline/print",
                        "language": "en"
                    }
                ],
                "milestones": [
                    {
                        "id": "0001",
                        "title": "Consultation Period",
                        "description": "A consultation period is open for citizen input to shape the final plans.",
                        "dueDate": "2015-04-15T17:00:00Z"
                    }
                ]
            }
        },
        {
            "ocid": "ocds-213czf-000-00001",
            "id": "ocds-213czf-000-00001-02-tender",
            "date": "2010-03-15T09:30:00Z",
            "language": "en",
            "tag": [
                "tender"
            ],
            "initiationType": "tender",
            "parties": [
                {
                    "identifier": {
                        "scheme": "GB-LAC",
                        "id": "E09000003",
                        "legalName": "London Borough of Barnet",
                        "uri": "http://www.barnet.gov.uk/"
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                    "name": "London Borough of Barnet",
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                        "streetAddress": "4, North London Business Park, Oakleigh Rd S",
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                        "region": "London",
                        "postalCode": "N11 1NP",
                        "countryName": "United Kingdom"
                    },
                    "contactPoint": {
                        "name": "Procurement Team",
                        "email": "procurement-team@example.com",
                        "telephone": "01234 345 346",
                        "faxNumber": "01234 345 345",
                        "url": "http://example.com/contact/"
                    },
                    "roles": [
                        "procuringEntity",
                        "buyer"
                    ],
                    "id": "GB-LAC-E09000003"
                }
            ],
            "buyer": {
                "id": "GB-LAC-E09000003",
                "name": "London Borough of Barnet"
            },
            "tender": {
                "id": "ocds-213czf-000-00001-01-tender",
                "title": "Planned cycle lane improvements",
                "description": "Tenders solicited for work to build new cycle lanes in the centre of town.",
                "status": "active",
                "items": [
                    {
                        "id": "0001",
                        "description": "string",
                        "classification": {
                            "scheme": "CPV",
                            "id": "45233130",
                            "description": "Construction work for highways",
                            "uri": "http://cpv.data.ac.uk/code-45233130"
                        },
                        "additionalClassifications": [
                            {
                                "scheme": "CPV",
                                "id": "45233162-2",
                                "description": "Cycle path construction work",
                                "uri": "http://cpv.data.ac.uk/code-45233162.html"
                            }
                        ],
                        "quantity": 8,
                        "unit": {
                            "name": "Miles",
                            "value": {
                                "amount": 120000,
                                "currency": "GBP"
                            }
                        }
                    }
                ],
                "minValue": {
                    "amount": 600000,
                    "currency": "GBP"
                },
                "value": {
                    "amount": 1100000,
                    "currency": "GBP"
                },
                "procurementMethod": "open",
                "procurementMethodRationale": "An open competitive tender is required by EU Rules",
                "awardCriteria": "bestProposal",
                "awardCriteriaDetails": "The best proposal, subject to value for money requirements, will be accepted.",
                "submissionMethod": [
                    "electronicSubmission"
                ],
                "submissionMethodDetails": "Submit through the online portal at http://example.com/submissions/ocds-213czf-000-00001-01/",
                "enquiryPeriod": {
                    "startDate": "2010-03-01T09:00:00Z",
                    "endDate": "2010-03-14T17:30:00Z"
                },
                "hasEnquiries": false,
                "tenderPeriod": {
                    "startDate": "2010-03-01T09:00:00Z",
                    "endDate": "2011-04-01T18:00:00Z"
                },
                "awardPeriod": {
                    "startDate": "2010-06-01T00:00:00Z",
                    "endDate": "2011-08-01T23:59:59Z"
                },
                "procuringEntity": {
                    "id": "GB-LAC-E09000003",
                    "name": "London Borough of Barnet"
                },
                "documents": [
                    {
                        "id": "0005",
                        "documentType": "notice",
                        "title": "Tender Notice",
                        "description": "Official tender notice.",
                        "url": "http://example.com/tender-notices/ocds-213czf-000-00001-01.html",
                        "datePublished": "2010-03-01T09:00:00Z",
                        "format": "text/html",
                        "language": "en"
                    }
                ]
            }
        },
        {
            "ocid": "ocds-213czf-000-00001",
            "id": "ocds-213czf-000-00001-03-tenderAmendment",
            "date": "2010-03-20T10:45:00Z",
            "language": "en",
            "tag": [
                "tenderAmendment"
            ],
            "initiationType": "tender",
            "parties": [
                {
                    "identifier": {
                        "scheme": "GB-LAC",
                        "id": "E09000003",
                        "legalName": "London Borough of Barnet",
                        "uri": "http://www.barnet.gov.uk/"
                    },
                    "name": "London Borough of Barnet",
                    "address": {
                        "streetAddress": "4, North London Business Park, Oakleigh Rd S",
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                        "region": "London",
                        "postalCode": "N11 1NP",
                        "countryName": "United Kingdom"
                    },
                    "contactPoint": {
                        "name": "Procurement Team",
                        "email": "procurement-team@example.com",
                        "telephone": "01234 345 346",
                        "faxNumber": "01234 345 345",
                        "url": "http://example.com/contact/"
                    },
                    "roles": [
                        "procuringEntity",
                        "buyer"
                    ],
                    "id": "GB-LAC-E09000003"
                }
            ],
            "buyer": {
                "id": "GB-LAC-E09000003",
                "name": "London Borough of Barnet"
            },
            "tender": {
                "id": "ocds-213czf-000-00001-01-tender",
                "title": "Planned cycle lane improvements",
                "description": "Tenders solicited for work to build new cycle lanes in the centre of town.",
                "status": "active",
                "items": [
                    {
                        "id": "0001",
                        "description": "string",
                        "classification": {
                            "scheme": "CPV",
                            "id": "45233130",
                            "description": "Construction work for highways",
                            "uri": "http://cpv.data.ac.uk/code-45233130"
                        },
                        "additionalClassifications": [
                            {
                                "scheme": "CPV",
                                "id": "45233162-2",
                                "description": "Cycle path construction work",
                                "uri": "http://cpv.data.ac.uk/code-45233162.html"
                            }
                        ],
                        "quantity": 8,
                        "unit": {
                            "name": "Miles",
                            "value": {
                                "amount": 120000,
                                "currency": "GBP"
                            }
                        }
                    }
                ],
                "minValue": {
                    "amount": 600000,
                    "currency": "GBP"
                },
                "value": {
                    "amount": 1210000,
                    "currency": "GBP"
                },
                "procurementMethod": "open",
                "procurementMethodRationale": "An open competitive tender is required by EU Rules",
                "awardCriteria": "bestProposal",
                "awardCriteriaDetails": "The best proposal, subject to value for money requirements, will be accepted.",
                "submissionMethod": [
                    "electronicSubmission"
                ],
                "submissionMethodDetails": "Submit through the online portal at http://example.com/submissions/ocds-213czf-000-00001-01/",
                "enquiryPeriod": {
                    "startDate": "2010-03-01T09:00:00Z",
                    "endDate": "2010-03-14T17:30:00Z"
                },
                "hasEnquiries": true,
                "tenderPeriod": {
                    "startDate": "2010-03-01T09:00:00Z",
                    "endDate": "2011-04-01T18:00:00Z"
                },
                "awardPeriod": {
                    "startDate": "2010-06-01T00:00:00Z",
                    "endDate": "2011-08-01T23:59:59Z"
                },
                "procuringEntity": {
                    "id": "GB-LAC-E09000003",
                    "name": "London Borough of Barnet"
                },
                "documents": [
                    {
                        "id": "0005",
                        "documentType": "notice",
                        "title": "Tender Notice",
                        "description": "Official tender notice.",
                        "url": "http://example.com/tender-notices/ocds-213czf-000-00001-01.html",
                        "datePublished": "2010-03-01T09:00:00Z",
                        "format": "text/html",
                        "language": "en"
                    },
                    {
                        "id": "0006",
                        "documentType": "enquiryResponses",
                        "title": "Enquiry Responses",
                        "description": "Responses to enquiries asked by interested parties.",
                        "url": "http://example.com/enquiry-response/ocds-213czf-000-00001-01.html",
                        "datePublished": "2010-03-20T11:30:15Z",
                        "format": "text/html",
                        "language": "en"
                    }
                ],
                "amendments": [
                    {
                        "id": "update-1",
                        "date": "2010-03-20T09:45:00Z",
                        "rationale": "Update following enquiries.",
                        "description": "Following the enquiry period, enquiries were received and responses to questions asked have been published. No changes to the overall tender details were made.",
                        "amendsReleaseID": "ocds-213czf-000-00001-02-tender",
                        "releaseID": "ocds-213czf-000-00001-03-tenderUpdate"
                    },
                    {
                        "id": "amendment-1",
                        "date": "2010-03-20T10:45:00Z",
                        "rationale": "Revised value",
                        "description": "Following the enquiry period, a decision was made to increase the maximum value by 10%.",
                        "amendsReleaseID": "ocds-213czf-000-00001-03-tenderUpdate",
                        "releaseID": "ocds-213czf-000-00001-03-tenderAmendment"
                    }
                ]
            }
        },
        {
            "ocid": "ocds-213czf-000-00001",
            "id": "ocds-213czf-000-00001-03-tenderUpdate",
            "date": "2010-03-20T09:45:00Z",
            "language": "en",
            "tag": [
                "tenderUpdate"
            ],
            "initiationType": "tender",
            "parties": [
                {
                    "identifier": {
                        "scheme": "GB-LAC",
                        "id": "E09000003",
                        "legalName": "London Borough of Barnet",
                        "uri": "http://www.barnet.gov.uk/"
                    },
                    "name": "London Borough of Barnet",
                    "address": {
                        "streetAddress": "4, North London Business Park, Oakleigh Rd S",
                        "locality": "London",
                        "region": "London",
                        "postalCode": "N11 1NP",
                        "countryName": "United Kingdom"
                    },
                    "contactPoint": {
                        "name": "Procurement Team",
                        "email": "procurement-team@example.com",
                        "telephone": "01234 345 346",
                        "faxNumber": "01234 345 345",
                        "url": "http://example.com/contact/"
                    },
                    "roles": [
                        "procuringEntity",
                        "buyer"
                    ],
                    "id": "GB-LAC-E09000003"
                }
            ],
            "buyer": {
                "id": "GB-LAC-E09000003",
                "name": "London Borough of Barnet"
            },
            "tender": {
                "id": "ocds-213czf-000-00001-01-tender",
                "title": "Planned cycle lane improvements",
                "description": "Tenders solicited for work to build new cycle lanes in the centre of town.",
                "status": "active",
                "items": [
                    {
                        "id": "0001",
                        "description": "string",
                        "classification": {
                            "scheme": "CPV",
                            "id": "45233130",
                            "description": "Construction work for highways",
                            "uri": "http://cpv.data.ac.uk/code-45233130"
                        },
                        "additionalClassifications": [
                            {
                                "scheme": "CPV",
                                "id": "45233162-2",
                                "description": "Cycle path construction work",
                                "uri": "http://cpv.data.ac.uk/code-45233162.html"
                            }
                        ],
                        "quantity": 8,
                        "unit": {
                            "name": "Miles",
                            "value": {
                                "amount": 120000,
                                "currency": "GBP"
                            }
                        }
                    }
                ],
                "minValue": {
                    "amount": 600000,
                    "currency": "GBP"
                },
                "value": {
                    "amount": 1100000,
                    "currency": "GBP"
                },
                "procurementMethod": "open",
                "procurementMethodRationale": "An open competitive tender is required by EU Rules",
                "awardCriteria": "bestProposal",
                "awardCriteriaDetails": "The best proposal, subject to value for money requirements, will be accepted.",
                "submissionMethod": [
                    "electronicSubmission"
                ],
                "submissionMethodDetails": "Submit through the online portal at http://example.com/submissions/ocds-213czf-000-00001-01/",
                "enquiryPeriod": {
                    "startDate": "2010-03-01T09:00:00Z",
                    "endDate": "2010-03-14T17:30:00Z"
                },
                "hasEnquiries": true,
                "tenderPeriod": {
                    "startDate": "2010-03-01T09:00:00Z",
                    "endDate": "2011-04-01T18:00:00Z"
                },
                "awardPeriod": {
                    "startDate": "2010-06-01T00:00:00Z",
                    "endDate": "2011-08-01T23:59:59Z"
                },
                "procuringEntity": {
                    "id": "GB-LAC-E09000003",
                    "name": "London Borough of Barnet"
                },
                "documents": [
                    {
                        "id": "0005",
                        "documentType": "notice",
                        "title": "Tender Notice",
                        "description": "Official tender notice.",
                        "url": "http://example.com/tender-notices/ocds-213czf-000-00001-01.html",
                        "datePublished": "2010-03-01T09:00:00Z",
                        "format": "text/html",
                        "language": "en"
                    },
                    {
                        "id": "0006",
                        "documentType": "enquiryResponses",
                        "title": "Enquiry Responses",
                        "description": "Responses to enquiries asked by interested parties.",
                        "url": "http://example.com/enquiry-response/ocds-213czf-000-00001-01.html",
                        "datePublished": "2010-03-20T11:30:15Z",
                        "format": "text/html",
                        "language": "en"
                    }
                ],
                "amendments": [
                    {
                        "id": "update-1",
                        "date": "2010-03-20T09:45:00Z",
                        "rationale": "Update following enquiries.",
                        "description": "Following the enquiry period, enquiries were received and responses to questions asked have been published. No changes to the overall tender details were made.",
                        "amendsReleaseID": "ocds-213czf-000-00001-02-tender",
                        "releaseID": "ocds-213czf-000-00001-03-tenderUpdate"
                    }
                ]
            }
        },
        {
            "ocid": "ocds-213czf-000-00001",
            "id": "ocds-213czf-000-00001-04-award",
            "date": "2010-05-10T09:30:00Z",
            "language": "en",
            "tag": [
                "award"
            ],
            "initiationType": "tender",
            "parties": [
                {
                    "identifier": {
                        "scheme": "GB-LAC",
                        "id": "E09000003",
                        "legalName": "London Borough of Barnet",
                        "uri": "http://www.barnet.gov.uk/"
                    },
                    "name": "London Borough of Barnet",
                    "address": {
                        "streetAddress": "4, North London Business Park, Oakleigh Rd S",
                        "locality": "London",
                        "region": "London",
                        "postalCode": "N11 1NP",
                        "countryName": "United Kingdom"
                    },
                    "contactPoint": {
                        "name": "Procurement Team",
                        "email": "procurement-team@example.com",
                        "telephone": "01234 345 346",
                        "faxNumber": "01234 345 345",
                        "url": "http://example.com/contact/"
                    },
                    "roles": [
                        "buyer"
                    ],
                    "id": "GB-LAC-E09000003"
                },
                {
                    "identifier": {
                        "scheme": "GB-COH",
                        "id": "1234567844",
                        "legalName": "AnyCorp Ltd",
                        "uri": "http://www.anycorp.example"
                    },
                    "additionalIdentifiers": [
                        {
                            "scheme": "GB-VAT",
                            "id": "987654321"
                        }
                    ],
                    "name": "AnyCorp Cycle Provision",
                    "address": {
                        "streetAddress": "100 Anytown Lane",
                        "locality": "Anytown",
                        "region": "AnyCounty",
                        "postalCode": "AN1 1TN",
                        "countryName": "United Kingdom"
                    },
                    "contactPoint": {
                        "name": "Contracts Team",
                        "email": "contracts@anycorp.example",
                        "telephone": "12345 456 343",
                        "faxNumber": "12345 456 343"
                    },
                    "roles": [
                        "supplier"
                    ],
                    "id": "GB-COH-1234567844"
                }
            ],
            "buyer": {
                "id": "GB-LAC-E09000003",
                "name": "London Borough of Barnet"
            },
            "awards": [
                {
                    "id": "ocds-213czf-000-00001-award-01",
                    "title": "Award of contract to build new cycle lanes in the centre of town.",
                    "description": "AnyCorp Ltd has been awarded the contract to build new cycle lanes in the centre of town.",
                    "status": "pending",
                    "date": "2010-05-10T09:30:00Z",
                    "value": {
                        "amount": 11000000,
                        "currency": "GBP"
                    },
                    "suppliers": [
                        {
                            "id": "GB-COH-1234567844",
                            "name": "AnyCorp Cycle Provision"
                        }
                    ],
                    "items": [
                        {
                            "id": "0001",
                            "description": "string",
                            "classification": {
                                "scheme": "CPV",
                                "id": "45233130",
                                "description": "Construction work for highways",
                                "uri": "http://cpv.data.ac.uk/code-45233130"
                            },
                            "additionalClassifications": [
                                {
                                    "scheme": "CPV",
                                    "id": "45233162-2",
                                    "description": "Cycle path construction work",
                                    "uri": "http://cpv.data.ac.uk/code-45233162.html"
                                }
                            ],
                            "quantity": 8,
                            "unit": {
                                "name": "Miles",
                                "value": {
                                    "amount": 137000,
                                    "currency": "GBP"
                                }
                            }
                        }
                    ],
                    "contractPeriod": {
                        "startDate": "2010-07-01T00:00:00Z",
                        "endDate": "2011-08-01T23:59:00Z"
                    },
                    "documents": [
                        {
                            "id": "0007",
                            "documentType": "notice",
                            "title": "Award notice",
                            "description": "Award of contract to build new cycle lanes in the centre of town to AnyCorp Ltd.",
                            "url": "http://example.com/tender-notices/ocds-213czf-000-00001-04.html",
                            "datePublished": "2010-05-10T09:30:00Z",
                            "format": "text/html",
                            "language": "en"
                        }
                    ]
                }
            ]
        },
        {
            "ocid": "ocds-213czf-000-00001",
            "id": "ocds-213czf-000-00001-05-contract",
            "date": "2010-05-10T10:30:00Z",
            "language": "en",
            "tag": [
                "contract"
            ],
            "initiationType": "tender",
            "parties": [
                {
                    "identifier": {
                        "scheme": "GB-LAC",
                        "id": "E09000003",
                        "legalName": "London Borough of Barnet",
                        "uri": "http://www.barnet.gov.uk/"
                    },
                    "name": "London Borough of Barnet",
                    "address": {
                        "streetAddress": "4, North London Business Park, Oakleigh Rd S",
                        "locality": "London",
                        "region": "London",
                        "postalCode": "N11 1NP",
                        "countryName": "United Kingdom"
                    },
                    "contactPoint": {
                        "name": "Procurement Team",
                        "email": "procurement-team@example.com",
                        "telephone": "01234 345 346",
                        "faxNumber": "01234 345 345",
                        "url": "http://example.com/contact/"
                    },
                    "roles": [
                        "buyer"
                    ],
                    "id": "GB-LAC-E09000003"
                },
                {
                    "identifier": {
                        "scheme": "GB-COH",
                        "id": "1234567844",
                        "legalName": "AnyCorp Ltd",
                        "uri": "http://www.anycorp.example"
                    },
                    "additionalIdentifiers": [
                        {
                            "scheme": "GB-VAT",
                            "id": "987654321"
                        }
                    ],
                    "name": "AnyCorp Cycle Provision",
                    "address": {
                        "streetAddress": "100 Anytown Lane",
                        "locality": "Anytown",
                        "region": "AnyCounty",
                        "postalCode": "AN1 1TN",
                        "countryName": "United Kingdom"
                    },
                    "contactPoint": {
                        "name": "Contracts Team",
                        "email": "contracts@anycorp.example",
                        "telephone": "12345 456 343",
                        "faxNumber": "12345 456 343"
                    },
                    "roles": [
                        "supplier"
                    ],
                    "id": "GB-COH-1234567844"
                }
            ],
            "buyer": {
                "id": "GB-LAC-E09000003",
                "name": "London Borough of Barnet"
            },
            "awards": [
                {
                    "id": "ocds-213czf-000-00001-award-01",
                    "title": "Award of contract to build new cycle lanes in the centre of town.",
                    "description": "AnyCorp Ltd has been awarded the contract to build new cycle lanes in the centre of town.",
                    "status": "active",
                    "date": "2010-05-10T10:30:00Z",
                    "value": {
                        "amount": 11000000,
                        "currency": "GBP"
                    },
                    "suppliers": [
                        {
                            "id": "GB-COH-1234567844",
                            "name": "AnyCorp Cycle Provision"
                        }
                    ],
                    "items": [
                        {
                            "id": "0001",
                            "description": "string",
                            "classification": {
                                "scheme": "CPV",
                                "id": "45233130",
                                "description": "Construction work for highways",
                                "uri": "http://cpv.data.ac.uk/code-45233130"
                            },
                            "additionalClassifications": [
                                {
                                    "scheme": "CPV",
                                    "id": "45233162-2",
                                    "description": "Cycle path construction work",
                                    "uri": "http://cpv.data.ac.uk/code-45233162.html"
                                }
                            ],
                            "quantity": 8,
                            "unit": {
                                "name": "Miles",
                                "value": {
                                    "amount": 137000,
                                    "currency": "GBP"
                                }
                            }
                        }
                    ],
                    "contractPeriod": {
                        "startDate": "2010-07-01T00:00:00Z",
                        "endDate": "2011-08-01T23:59:00Z"
                    },
                    "documents": [
                        {
                            "id": "0007",
                            "documentType": "notice",
                            "title": "Award notice",
                            "description": "Award of contract to build new cycle lanes in the centre of town to AnyCorp Ltd.",
                            "url": "http://example.com/tender-notices/ocds-213czf-000-00001-04.html",
                            "datePublished": "2010-05-10T10:30:00Z",
                            "format": "text/html",
                            "language": "en"
                        }
                    ]
                }
            ],
            "contracts": [
                {
                    "id": "ocds-213czf-000-00001-contract-01",
                    "awardID": "ocds-213czf-000-00001-award-01",
                    "title": "Contract to build new cycle lanes in the centre of town.",
                    "description": "A contract has been signed between the Council and AnyCorp Ltd for construction of new cycle lanes in the centre of town.",
                    "status": "active",
                    "period": {
                        "startDate": "2010-07-01T00:00:00Z",
                        "endDate": "2011-08-01T23:59:00Z"
                    },
                    "value": {
                        "amount": 11000000,
                        "currency": "GBP"
                    },
                    "items": [
                        {
                            "id": "0001",
                            "description": "string",
                            "classification": {
                                "scheme": "CPV",
                                "id": "45233130",
                                "description": "Construction work for highways",
                                "uri": "http://cpv.data.ac.uk/code-45233130"
                            },
                            "additionalClassifications": [
                                {
                                    "scheme": "CPV",
                                    "id": "45233162-2",
                                    "description": "Cycle path construction work",
                                    "uri": "http://cpv.data.ac.uk/code-45233162.html"
                                }
                            ],
                            "quantity": 8,
                            "unit": {
                                "name": "Miles",
                                "value": {
                                    "amount": 137000,
                                    "currency": "GBP"
                                }
                            }
                        }
                    ],
                    "dateSigned": "2015-06-10T14:23:12Z",
                    "documents": [
                        {
                            "id": "0008",
                            "documentType": "contractSigned",
                            "title": "Signed Contract",
                            "description": "The Signed Contract for Cycle Path Construction",
                            "url": "http://example.com/contracts/ocds-213czf-000-00001",
                            "datePublished": "2015-06-10T16:43:12Z",
                            "format": "application/pdf",
                            "language": "en"
                        }
                    ]
                }
            ]
        },
        {
            "ocid": "ocds-213czf-000-00001",
            "id": "ocds-213czf-000-00001-06-implementation",
            "date": "2011-01-10T09:30:00Z",
            "language": "en",
            "tag": [
                "implementation"
            ],
            "initiationType": "tender",
            "parties": [
                {
                    "identifier": {
                        "scheme": "GB-LAC",
                        "id": "E09000003",
                        "legalName": "London Borough of Barnet",
                        "uri": "http://www.barnet.gov.uk/"
                    },
                    "name": "London Borough of Barnet",
                    "address": {
                        "streetAddress": "4, North London Business Park, Oakleigh Rd S",
                        "locality": "London",
                        "region": "London",
                        "postalCode": "N11 1NP",
                        "countryName": "United Kingdom"
                    },
                    "contactPoint": {
                        "name": "Procurement Team",
                        "email": "procurement-team@example.com",
                        "telephone": "01234 345 346",
                        "faxNumber": "01234 345 345",
                        "url": "http://example.com/contact/"
                    },
                    "roles": [
                        "buyer"
                    ],
                    "id": "GB-LAC-E09000003"
                },
                {
                    "identifier": {
                        "scheme": "GB-COH",
                        "id": "1234567844",
                        "legalName": "AnyCorp Ltd",
                        "uri": "http://www.anycorp.example"
                    },
                    "additionalIdentifiers": [
                        {
                            "scheme": "GB-VAT",
                            "id": "987654321"
                        }
                    ],
                    "name": "AnyCorp Cycle Provision",
                    "address": {
                        "streetAddress": "100 Anytown Lane",
                        "locality": "Anytown",
                        "region": "AnyCounty",
                        "postalCode": "AN1 1TN",
                        "countryName": "United Kingdom"
                    },
                    "contactPoint": {
                        "name": "Contracts Team",
                        "email": "contracts@anycorp.example",
                        "telephone": "12345 456 343",
                        "faxNumber": "12345 456 343"
                    },
                    "roles": [
                        "supplier"
                    ],
                    "id": "GB-COH-1234567844"
                }
            ],
            "buyer": {
                "id": "GB-LAC-E09000003",
                "name": "London Borough of Barnet"
            },
            "awards": [
                {
                    "id": "ocds-213czf-000-00001-award-01",
                    "title": "Award of contract to build new cycle lanes in the centre of town.",
                    "description": "AnyCorp Ltd has been awarded the contract to build new cycle lanes in the centre of town.",
                    "status": "active",
                    "date": "2010-05-10T10:30:00Z",
                    "value": {
                        "amount": 11000000,
                        "currency": "GBP"
                    },
                    "suppliers": [
                        {
                            "id": "GB-COH-1234567844",
                            "name": "AnyCorp Cycle Provision"
                        }
                    ],
                    "items": [
                        {
                            "id": "0001",
                            "description": "string",
                            "classification": {
                                "scheme": "CPV",
                                "id": "45233130",
                                "description": "Construction work for highways",
                                "uri": "http://cpv.data.ac.uk/code-45233130"
                            },
                            "additionalClassifications": [
                                {
                                    "scheme": "CPV",
                                    "id": "45233162-2",
                                    "description": "Cycle path construction work",
                                    "uri": "http://cpv.data.ac.uk/code-45233162.html"
                                }
                            ],
                            "quantity": 8,
                            "unit": {
                                "name": "Miles",
                                "value": {
                                    "amount": 137000,
                                    "currency": "GBP"
                                }
                            }
                        }
                    ],
                    "contractPeriod": {
                        "startDate": "2010-07-01T00:00:00Z",
                        "endDate": "2011-08-01T23:59:00Z"
                    },
                    "documents": [
                        {
                            "id": "0007",
                            "documentType": "notice",
                            "title": "Award notice",
                            "description": "Award of contract to build new cycle lanes in the centre of town to AnyCorp Ltd.",
                            "url": "http://example.com/tender-notices/ocds-213czf-000-00001-04.html",
                            "datePublished": "2010-05-10T10:30:00Z",
                            "format": "text/html",
                            "language": "en"
                        }
                    ]
                }
            ],
            "contracts": [
                {
                    "id": "ocds-213czf-000-00001-contract-01",
                    "awardID": "ocds-213czf-000-00001-award-01",
                    "title": "Contract to build new cycle lanes in the centre of town.",
                    "description": "Contract monitoring for cycle lane construction.",
                    "status": "active",
                    "period": {
                        "startDate": "2010-07-01T00:00:00Z",
                        "endDate": "2011-08-01T23:59:00Z"
                    },
                    "value": {
                        "amount": 11000000,
                        "currency": "GBP"
                    },
                    "items": [
                        {
                            "id": "0001",
                            "description": "string",
                            "classification": {
                                "scheme": "CPV",
                                "id": "45233130",
                                "description": "Construction work for highways",
                                "uri": "http://cpv.data.ac.uk/code-45233130"
                            },
                            "additionalClassifications": [
                                {
                                    "scheme": "CPV",
                                    "id": "45233162-2",
                                    "description": "Cycle path construction work",
                                    "uri": "http://cpv.data.ac.uk/code-45233162.html"
                                }
                            ],
                            "quantity": 8,
                            "unit": {
                                "name": "Miles",
                                "value": {
                                    "amount": 137000,
                                    "currency": "GBP"
                                }
                            }
                        }
                    ],
                    "dateSigned": "2015-06-10T14:23:12Z",
                    "documents": [
                        {
                            "id": "0009",
                            "documentType": "physicalProcessReport",
                            "title": "Progress report",
                            "description": "Physical progress report for cycle path construction",
                            "url": "http://example.com/reports/ocds-213czf-000-00001/cycle-path-01.pdf",
                            "datePublished": "2010-12-15T15:34:02Z",
                            "format": "application/pdf",
                            "language": "en"
                        }
                    ],
                    "implementation": {
                        "transactions": [
                            {
                                "id": "ocds-213czf-000-00001-1",
                                "source": "https://openspending.org/uk-barnet-spending/",
                                "date": "2010-08-01T00:00:00Z",
                                "uri": "https://openspending.org/uk-barnet-spending/transaction/asd9235qaghvs1059620ywhgai",
                                "payer": {
                                    "id": "GB-LAC-E09000003",
                                    "name": "London Borough of Barnet"
                                },
                                "payee": {
                                    "id": "GB-COH-1234567844",
                                    "name": "AnyCorp Ltd"
                                },
                                "value": {
                                    "amount": 500000,
                                    "currency": "GBP"
                                }
                            },
                            {
                                "id": "ocds-213czf-000-00001-2",
                                "source": "https://openspending.org/uk-barnet-spending/",
                                "date": "2010-10-01T00:00:00Z",
                                "uri": "https://openspending.org/uk-barnet-spending/transaction/asd9235qaghvs105962as0012",
                                "payer": {
                                    "id": "GB-LAC-E09000003",
                                    "name": "London Borough of Barnet"
                                },
                                "payee": {
                                    "id": "GB-COH-1234567844",
                                    "name": "AnyCorp Ltd"
                                },
                                "value": {
                                    "amount": 100000,
                                    "currency": "GBP"
                                }
                            }
                        ]
                    }
                }
            ]
        }
    ]
}

Comparing options

The considerations are:

  • Using linked releases yields smaller file sizes than using embedded releases.

  • From a user's perspective, the contents of releases are easier to access as embedded releases than as linked releases (which involves the retrieval process described above).

  • From a publisher's perspective, using linked releases involves publishing release packages and constructing url values, whereas using embedded releases doesn't.

Compiled release

The compiled release is the latest version of all the data about a contracting process. In other words, it provides a snapshot of the current state of a contracting process.

The compiled release follows the release schema, with the exception of any fields on which "omitWhenMerged": true is declared.

The process for creating a compiled release from individual releases is described in the merging reference.

Versioned release

A versioned release aggregates all values of all fields from all releases. For each field, it describes the history of values from the initial value to the current value, including the id, date and tag of the release in which it was changed.

This versioned information is relevant to many use cases relating to contract monitoring. However, it can significantly increase file sizes. As such, publishers can consider publishing records both with and without the versioned release.

If the versioned release is not provided, third parties can generate it by processing the record's releases according to the merging reference.

The following example displays a single field's versioned values. This shows that the amount changed between the planning stage and the tender stage, while the currency did not.

{
    "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"
        }
    ]
}