---
title: "Changes to Expand a concept or collection to all it's narrower concepts."
method: GET
path: "/conceptschemes/{scheme_id}/c/{c_id}/expand"
---

# Changes to Expand a concept or collection to all it's narrower concepts.

`GET /conceptschemes/{scheme_id}/c/{c_id}/expand`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 4 of 24 revisions.

- **2025-11-20** `d98571488187`: 1 breaking
- **2024-08-01** `20edc4da41fd`: 1 info
- **2021-12-22** `042de7aa8903`: 1 info
- **2021-12-20** `720170256c20`: 1 breaking

## Changes

- **2025-11-20** `d98571488187`: 1 breaking
  - the `items/` response's property type changed from `integer` to `string` for status `200`
- **2024-08-01** `20edc4da41fd`: 1 info
  - for the `path` request parameter `c_id`, the type was generalized from `integer` to `string`
- **2021-12-22** `042de7aa8903`: 1 info
  - endpoint added
- **2021-12-20** `720170256c20`: 1 breaking
  - api path removed without deprecation

---

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