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Additional Contact Points and Contact Point Languages

There are some cases where it is important to list multiple contact points for an organization, particularly in cases where each contact point deals with enquiries in particular languages only.

This extension adds an array of additionalContactPoints to the Organization object, and introduces an availableLanguage array of language codes to ContactPoint.

When this extension is used, publishers should include a primary contact point for the contactPoint object, on the basis that many applications will not be aware of the additionalContactPoints array. However, if a primary contact point can't be determined, all contact points may be disclosed in the additionalContactPoints array.


The example below shows a procuring entity with two contact points. A primarily contact

  "parties": [
      "id": "GB-LAC-E09000003",
      "roles": [
      "identifier": {
        "scheme": "GB-LAC",
        "id": "E09000003",
        "legalName": "AnyTown Council"
      "name": "AnyTown Council",
      "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": "",
        "telephone": "01234 345 346",
        "availableLanguage": [
      "additionalContactPoints": [
          "name": "Procurement Team (International Enquiries)",
          "email": "",
          "telephone": "01234 345 346 Extension 123",
          "availableLanguage": [

Modelling notes

availableLanguage is singular, although it is an array, to align with


Report issues for this extension in the ocds-extensions repository, putting the extension's name in the issue's title.



  • Review normative and non-normative words


  • Add minProperties, minItems and/or minLength properties.


  • Set "uniqueItems": true on array fields.


  • Set wholeListMerge on Organization.additionalContactPoints
  • Clarify use of language codes on ContactPoint.availableLanguage