---
title: "Changes to Http Get Ci Schema V2"
method: GET
path: "/v2/retrieve_collection_instrument"
---

# Changes to Http Get Ci Schema V2

`GET /v2/retrieve_collection_instrument`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 22 of 47 revisions.

- **2026-08-28** `e82a1a49216c`: 11 breaking, 1 warning
- **2026-08-27** `1e0c2422ae94`: 2 info
- **2026-04-29** `1b29b4c8de31`: 2 info
- **2025-07-11** `8e0764f79249`: 1 info
- **2024-11-28** `d4663c684113`: 1 breaking
- **2024-11-28** `96667fafcabf`: 1 breaking
- **2024-07-17** `2a9a26fceb69`: 1 breaking
- **2024-07-11** `4eb7f4590113`: 1 info
- **2024-07-10** `f445ca65ef2c`: 1 breaking
- **2024-06-18** `f3fc41eff5c6`: 1 breaking, 3 info
- **2024-05-22** `372df9a065d6`: 5 info
- **2023-11-27** `187a0e3b7ae3`: 1 breaking, 1 info
- **2023-10-11** `d48cb6b5f9c5`: 1 info
- **2023-08-31** `c6258e69ce73`: 1 info
- **2023-08-10** `d7a3a21911d6`: 1 breaking, 1 info
- **2023-08-10** `c4e0fb05bd42`: 1 breaking, 1 warning
- **2023-08-04** `423c2af9b631`: 1 info
- **2023-08-04** `4bf3eab4d162`: 1 breaking, 1 info
- **2023-08-04** `10ec5344d784`: 1 breaking, 1 info
- **2023-08-02** `ecee23fc3d65`: 1 info
- **2023-08-01** `49866633ff15`: 1 breaking
- **2023-07-25** `725236468e3c`: 1 info

## Changes

- **2026-08-28** `e82a1a49216c`: 11 breaking, 1 warning
  - the response's body type changed from `object` to no type for status `200`
  - removed the required property `ci_version` from the response with the `200` status
  - removed the required property `classifier_type` from the response with the `200` status
  - removed the required property `classifier_value` from the response with the `200` status
  - removed the required property `data_version` from the response with the `200` status
  - removed the required property `guid` from the response with the `200` status
  - removed the required property `language` from the response with the `200` status
  - removed the required property `published_at` from the response with the `200` status
  - removed the required property `survey_id` from the response with the `200` status
  - removed the required property `title` from the response with the `200` status
  - removed the required property `validator_version` from the response with the `200` status
  - removed the optional property `sds_schema` from the response with the `200` status
- **2026-08-27** `1e0c2422ae94`: 2 info
  - added the optional property `detail/items/ctx` to the response with the `422` status
  - added the optional property `detail/items/input` to the response with the `422` status
- **2026-04-29** `1b29b4c8de31`: 2 info
  - api tag `legacy` added
  - endpoint deprecated
- **2025-07-11** `8e0764f79249`: 1 info
  - added the required property `validator_version` to the response with the `200` status
- **2024-11-28** `d4663c684113`: 1 breaking
  - removed the required property `description` from the response with the `200` status
- **2024-11-28** `96667fafcabf`: 1 breaking
  - removed the required property `schema_version` from the response with the `200` status
- **2024-07-17** `2a9a26fceb69`: 1 breaking
  - removed the required property `status` from the response with the `200` status
- **2024-07-11** `4eb7f4590113`: 1 info
  - added the required property `status` to the response with the `200` status
- **2024-07-10** `f445ca65ef2c`: 1 breaking
  - removed the required property `status` from the response with the `200` status
- **2024-06-18** `f3fc41eff5c6`: 1 breaking, 3 info
  - removed the required property `form_type` from the response with the `200` status
  - the `query` request parameter `guid` became optional
  - added the required property `classifier_type` to the response with the `200` status
  - added the required property `classifier_value` to the response with the `200` status
- **2024-05-22** `372df9a065d6`: 5 info
  - added the media type `application/json` for the response with the status `500`
  - the response property `status` became required for the status `400`
  - the response property `status` became required for the status `404`
  - the `status` response's property default value `error` was removed for the status `400`
  - the `status` response's property default value `error` was removed for the status `404`
- **2023-11-27** `187a0e3b7ae3`: 1 breaking, 1 info
  - removed the required property `id` from the response with the `200` status
  - added the required property `guid` to the response with the `200` status
- **2023-10-11** `d48cb6b5f9c5`: 1 info
  - response property `sds_schema` list-of-types was narrowed by removing types `null` from media type `application/json` of response `200`
- **2023-08-31** `c6258e69ce73`: 1 info
  - added the required property `description` to the response with the `200` status
- **2023-08-10** `d7a3a21911d6`: 1 breaking, 1 info
  - api path removed without deprecation
  - endpoint added
- **2023-08-10** `c4e0fb05bd42`: 1 breaking, 1 warning
  - added the new required `query` request parameter `guid`
  - deleted the `query` request parameter `id`
- **2023-08-04** `423c2af9b631`: 1 info
  - added the non-success response with the status `500`
- **2023-08-04** `4bf3eab4d162`: 1 breaking, 1 info
  - api path removed without deprecation
  - endpoint added
- **2023-08-04** `10ec5344d784`: 1 breaking, 1 info
  - api path removed without deprecation
  - endpoint added
- **2023-08-02** `ecee23fc3d65`: 1 info
  - endpoint added
- **2023-08-01** `49866633ff15`: 1 breaking
  - api path removed without deprecation
- **2023-07-25** `725236468e3c`: 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/office-of-national-statistics/apis/collection-instrumentation-register/docs/v2/retrieve_collection_instrument/get.md) - [API](https://skmtc.dev/office-of-national-statistics/apis/collection-instrumentation-register.md) - [Page](https://skmtc.dev/office-of-national-statistics/apis/collection-instrumentation-register/changes/v2/retrieve_collection_instrument/get)