---
title: "Changes to Add a concept or collection to a conceptscheme."
method: POST
path: "/conceptschemes/{scheme_id}/c"
---

# Changes to Add a concept or collection to a conceptscheme.

`POST /conceptschemes/{scheme_id}/c`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 4 of 24 revisions.

- **2025-11-20** `d98571488187`: 3 breaking, 13 warning, 2 info
- **2024-08-01** `20edc4da41fd`: 15 breaking
- **2021-12-22** `042de7aa8903`: 2 info
- **2021-12-20** `720170256c20`: 3 breaking, 17 info

## Changes

- **2025-11-20** `d98571488187`: 3 breaking, 13 warning, 2 info
  - the request's body type changed from `object` to no type
  - added `#/components/schemas/ConceptDetail, #/components/schemas/CollectionDetail` to the response body `oneOf` list for the response status `201`
  - the `errors` response's property type changed from `string` to `array` for status `400`
  - removed the request property `broader`
  - removed the request property `id`
  - removed the request property `infer_concept_relations`
  - removed the request property `labels`
  - removed the request property `matches`
  - removed the request property `member_of`
  - removed the request property `members`
  - removed the request property `narrower`
  - removed the request property `notes`
  - removed the request property `related`
  - removed the request property `sources`
  - removed the request property `subordinate_arrays`
  - removed the request property `type`
  - added `#/components/schemas/ConceptCreate, #/components/schemas/CollectionCreate` to the request body `oneOf` list
  - removed `#/components/schemas/ConceptRequest, subschema #2` from the response body `allOf` list for the response status `201`
- **2024-08-01** `20edc4da41fd`: 15 breaking
  - the `broader/items/id` request property type changed from `integer` to `string`
  - the `id` request property type changed from `integer` to `string`
  - the `member_of/items/id` request property type changed from `integer` to `string`
  - the `members/items/id` request property type changed from `integer` to `string`
  - the `narrower/items/id` request property type changed from `integer` to `string`
  - the `related/items/id` request property type changed from `integer` to `string`
  - the `subordinate_arrays/items/id` request property type changed from `integer` to `string`
  - the `allOf[#/components/schemas/ConceptRequest]/broader/items/id` response's property type changed from `integer` to `string` for status `201`
  - the `allOf[#/components/schemas/ConceptRequest]/id` response's property type changed from `integer` to `string` for status `201`
  - the `allOf[#/components/schemas/ConceptRequest]/member_of/items/id` response's property type changed from `integer` to `string` for status `201`
  - the `allOf[#/components/schemas/ConceptRequest]/members/items/id` response's property type changed from `integer` to `string` for status `201`
  - the `allOf[#/components/schemas/ConceptRequest]/narrower/items/id` response's property type changed from `integer` to `string` for status `201`
  - the `allOf[#/components/schemas/ConceptRequest]/related/items/id` response's property type changed from `integer` to `string` for status `201`
  - the `allOf[#/components/schemas/ConceptRequest]/subordinate_arrays/items/id` response's property type changed from `integer` to `string` for status `201`
  - the `allOf[subschema #2]/id` response's property type changed from `integer` to `string` for status `201`
- **2021-12-22** `042de7aa8903`: 2 info
  - api tag `Atramhasis` added
  - api tag `Concepts and collections` removed
- **2021-12-20** `720170256c20`: 3 breaking, 17 info
  - removed `#/components/schemas/ConceptCreate, #/components/schemas/CollectionCreate` from the request body `oneOf` list
  - the request's body type changed from no type to `object`
  - the `errors` response's property type changed from `array` to `string` for status `400`
  - api tag `Concepts and collections` added
  - api tag `Atramhasis` removed
  - added the new optional request property `broader`
  - added the new optional request property `id`
  - added the new optional request property `infer_concept_relations`
  - added the new optional request property `labels`
  - added the new optional request property `matches`
  - added the new optional request property `member_of`
  - added the new optional request property `members`
  - added the new optional request property `narrower`
  - added the new optional request property `notes`
  - added the new optional request property `related`
  - added the new optional request property `sources`
  - added the new optional request property `subordinate_arrays`
  - added the new optional request property `type`
  - added `#/components/schemas/ConceptRequest, subschema #2` to the response body `allOf` list for the response status `201`
  - removed `#/components/schemas/ConceptDetail, #/components/schemas/CollectionDetail` from the response body `oneOf` list for the response status `201`

---

[Operation](https://skmtc.dev/onroerenderfgoed/apis/atramhasis-api/docs/conceptschemes/:scheme_id/c/post.md) - [API](https://skmtc.dev/onroerenderfgoed/apis/atramhasis-api.md) - [Page](https://skmtc.dev/onroerenderfgoed/apis/atramhasis-api/changes/conceptschemes/:scheme_id/c/post)