OC4IDS 0.9.3: Increased CoST IDS coverage and clearer documentation

Skip to first unread message

Duncan Dewhurst

Sep 21, 2021, 6:46:09 PM9/21/21
to Open Contracting Data Standard - Discussion Group

Hi all,

A patch release of the Open Contracting for Infrastructure Data Standard (OC4IDS) has been drafted and is available for preview in English and Spanish.


The main changes in this release are to expand the schema, codelists, and mapping documentation to cover the reactive disclosure elements from the CoST IDS, and to improve the clarity of the Getting Started documentation. Notable changes are listed below. You can also consult the full changelog in English and Spanish

Schema and codelists

  • Add forecasts and metrics fields, which can be used to publish implementation progress reports.
  • Add a field and class for natural persons, which can be used to publish project and contract officials.
  • Add contractingProcesses/summary/transactions, which can be used to publish disbursement records.
  • Add new codes to the documentType codelist:

    • socialImpact
    • resettlementPlan
    • financialAgreement
    • budgetAmendmentApproval
    • technicalAuditReport
    • financialAuditReport
    • escalationApproval
    • qualityAssuranceReport
    • incorporationCertificate
    • contractAmendment
    • designReport
    • paymentCertificate
  • Update fields and codes shared with OCDS for PPPs 1.0.0-beta2 and OCDS 1.1.5.

  • Add stricter validation rules to catch empty arrays, objects, and strings.


  • Separate the CoST IDS to OC4IDS mapping and the OCDS to OC4IDS mapping documentation.
  • Add the reactive disclosure elements from the CoST IDS to the mapping documentation.
  • Update the OCDS to OC4IDS mapping documentation to reflect the logic used in OCDS Kit’s convert-to-oc4ids command .
  • Improve the clarity of the Getting Started documentation.

In all, 41 issues were closed.

What’s next

We plan to add an extensions mechanism to enable publishers to document the meaning, structure and format of additional fields.

Your feedback

We invite your feedback on the changes listed in the changelog (English | Spanish) by Wednesday 6th October 2021. Feedback can be submitted on this mailing list or on the pull request on Github.

Best regards,

Duncan Dewhurst
OC4IDS Helpdesk

Duncan Dewhurst

Oct 12, 2021, 8:14:08 PM10/12/21
to Open Contracting Data Standard - Discussion Group, Duncan Dewhurst
Hi everyone,

I'm pleased to announce that version 0.9.3 of OC4IDS is now live: https://standard.open-contracting.org/infrastructure/. For more information about the changes in the new version, please see my previous message.

You can check draft or published OC4IDS data against the new version of the schema using the OC4IDS Data Review Tool.

The Data Review Tool also has a new feature: it now provides feedback on which OC4IDS fields are populated in your data.

If you have any questions about the changes, please contact the OC4IDS Helpdesk: da...@open-contracting.org.

Best regards,

OC4IDS Helpdesk
Reply all
Reply to author
0 new messages