All notable changes to this project will be documented in this file. This project adheres to Semantic Versioning.

[1.1.3] - 2018-04-16

Codelist updates

  • Update currency codelist for ISO4217 amendment 165 (2017-12-14).

Schema fixes

  • #646 Disallow use of null as an item in the array for Tender.additionalProcurementCategories.
  • #639 Make name field optional for OrganizationReference.
  • #630 Allow optional field Item.unit to be null.
  • #603, #645 Add definitions to Release, planning.budget, Milestone, Organization.address, Organization.contactPoint, Classification, Identifier, Value and Period.
  • Make record-package-schema.json use the codelist property to reference releaseTag.csv, and update the enum accordingly.
  • #578 Update definition of buyer to cover goods, works and services, and multiple buyers.

Documentation fixes

  • #633 Update schema reference page to display Release.relatedProcesses, Planning.documents and Contract.relatedProcesses.
  • #634 Clarify definitions of core, community and local extensions.

Extension fixes

  • #40, #43, #47 Add missing definitions, codelists and enums to core extensions, correct typos in codelist filenames, disallow use of null as an item in arrays, disallow required fields from being set to null, allow optional fields to be null, use OrganizationReference instead of Organization.

Old and unused scripts have been removed from the documentation repository, and a number of script dependencies have been updated.

[1.1.2] - 2017-11-10

Codelist updates

  • 554 - Update currency codelist for ISO4217 amendment 163 (2017-06-09). Note: XBT (Bitcoin) is removed from the codelist as it is not part of ISO4217.

[1.1.1] - 2017-07-31

Bug fixes

Minor revisions

Documentation improvements

Code and build process

  • #506 Removed from utility scripts as it is no longer required.
  • Addition of docstrings to key scripts

[1.1.0] - 2017-05-01

Policy changes

  • #401 Deprecation policy - The deprecation policy has been updated to support deprecation in decimal upgrades.


Structural updates

  • #368 Updates to organization handling in OCDS - We have updated the approach to include organization information in the standard from having embedded blocks of organization information, to using embedded cross-references to a top-level ‘parties’ array where full organization details are stored. This change reduces duplication of organization information, and enables more flexible disclosure of information on all the parties to a contracting process, including multiple buyers.
  • #357 Amendment handling - We have replace amendment with an array of amendments, and have updated schema and guidance to remove the option of providing semi-structured changes in an amendment object. Changes between amendments should now be provided using multiple releases, with the option to explicitly declare how releases relate to an amendment included in the new amendments array.

Schema validation updates

Schema definition updates

Closed codelist updates

  • #201 Tender status - New ‘pipeline’ and ‘withdrawn’ codes have been introduced to the tenderStatus codelist.
  • #380 Procurement method - A new code for ‘direct’ has been added the procurementMethod codelist
  • #373 Milestone status - We have updated the milestoneStatus codelist with a ‘scheduled’ entry and revised definitions
  • #297 Currency codelist external link - We have fixed the external link for currency codelists to refer to the official ISO source.

Open codelist updates



  • #335 Core and community extensions - We have introduced widespread use of extensions throughout the standard. An extension provides fields and data structures that are optional, either because (a) they are only relevant in particular contexts or contracting processes; or (b) they represent a ‘stretch goal’ for most data publishers, and so are not currently suitable for inclusion in the main standard. We divide these extensions into ‘core extensions’ which have wide enough relevance, and technical maturity to be included in the main standard documentation (and which are versioned along with the standard documentation), and ‘community extensions’ which may have less technical maturity, or which might be versioned independently of the main standard.
  • #259 Enquiries - We have introduced a core enquiries extension for providing information on enquiries received during the tender stage.
  • #342 Overall contracting process description - We have introduced a new top-level title and description for the contracting process as a core extension.
  • #274 New property of contract: extendsContractID - We have introduced a new field ‘extendsContractID’ to the Contract block to support contract cross-referencing between contracts.
  • #381 Lots - We have introduced a core extension to provide a model for contracting processes which are divided into lots.
  • #379 Bids and Bid Statistics - We have introduced a core extension which provides a top level Bids section, with BidStatistics and Bid building blocks for detailed information on individual bids. This supersedes the current tender/tenderers section.
  • #250 Location extension - We have moved the location extensions to become a core extension
  • #33 Participation fees (bid document and submission costs) - We have introduced a core extension for declaring the participation fees related to a contracting process.
  • #249 Extend contract with a supplier array - We have introduced a core extension to allow inclusion of supplier information at the contract level.


[1.0.3] - 2017-07-31


  • #329 - updated item.quantity to support decimal values (integer -> number)
  • #253 - updated value.amount to support negative values

[1.0.2] - 2016-11-22



  • Added titles to all fields in the documentation (#362)
  • Missing field procurementMethodDetails added to schema (#221)
  • Typo fix in releaseTag (#391)
  • Fixing links to Fiscal Data Package (#271)
  • Description for numberOfTenderers (#314)
  • Fixed definition of changes (#244)
  • Updated documentation to refer to ‘Object’ not ‘Reference’ for fields (#228)

Tidy up

  • Removed the old Spanish documentation translations folders from standard/docs/es
  • Added CSV download links for registered ocids, and publication levels
  • Updated publication levels spreadsheet to reflect version 1.0.2

[1.0.1] - 2016-03-14

Updated documentation was released. This did not make any semantic changes to the standard.

[1.0] - 2015-07-29


  • contractPeriod added to award to allow the anticipated period of a contract to be recorded, without requiring the creation of a contract block. Discussed in #199
  • Updated codelists


  • Minor documentation fixes.

[1.0.RC] - 2014-11-18

Changes prior to this point are not covered by this changelog. A non-exhaustive overview of changes between the beta release and 1.0.RC can be found on the project blog.