---
title: "Changes to Creates a custom field definition."
method: POST
path: "/customfielddefinitions"
---

# Changes to Creates a custom field definition.

`POST /customfielddefinitions`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 3 of 15 revisions.

- **2026-09-17** `1556e0487867`: 1 warning, 1 info
- **2026-09-12** `8e46cf415581`: 1 info
- **2026-08-21** `a13e7c704262`: 2 breaking, 2 warning

## Changes

- **2026-09-17** `1556e0487867`: 1 warning, 1 info
  - deleted the `header` request parameter `Authorization`
  - the endpoint scheme security `oauth2` was added to the API
- **2026-09-12** `8e46cf415581`: 1 info
  - api operation id `PostCustomFieldDefinition` removed and replaced with `customFields_PostCustomFieldDefinition`
- **2026-08-21** `a13e7c704262`: 2 breaking, 2 warning
  - the `name` request property's minLength was increased from `0` to `1`
  - the `selectionOptions/items/value` request property's minLength was increased from `0` to `1`
  - the `name` request property's maxLength was set to `255`
  - the `selectionOptions/items/value` request property's maxLength was set to `255`

---

[Operation](https://skmtc.dev/awork-io/apis/api-v1-reference/docs/customfielddefinitions/post.md) · [API](https://skmtc.dev/awork-io/apis/api-v1-reference.md) · [Page](https://skmtc.dev/awork-io/apis/api-v1-reference/changes/customfielddefinitions/post)