---
title: "Changes to Create a custom_field"
method: POST
path: "/v1/custom_fields"
---

# Changes to Create a custom_field

`POST /v1/custom_fields`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 2 revisions.

- **2026-11-03** `173c41bf6be9`: 1 breaking, 8 warning, 14 info

## Changes

- **2026-11-03** `173c41bf6be9`: 1 breaking, 8 warning, 14 info
  - removed the enum value `cross_reference` of the request property `field_type`
  - removed the request property `options/cross_reference_allowed_target_types`
  - added the new `Business` enum value to the `entity_type` response property for the response status `201`
  - added the new `FinancialAccount` enum value to the `entity_type` response property for the response status `201`
  - added the new `InsurancePolicy` enum value to the `entity_type` response property for the response status `201`
  - added the new `Trust` enum value to the `entity_type` response property for the response status `201`
  - added the new `rich_text` enum value to the `field_type` response property for the response status `201`
  - added the new `url` enum value to the `field_type` response property for the response status `201`
  - added the new `user_reference` enum value to the `field_type` response property for the response status `201`
  - added the new optional request property `options/select_option_colors`
  - the request property `field_key` became optional
  - added the new `Business` enum value to the request property `entity_type`
  - added the new `FinancialAccount` enum value to the request property `entity_type`
  - added the new `InsurancePolicy` enum value to the request property `entity_type`
  - added the new `Trust` enum value to the request property `entity_type`
  - added the new `rich_text` enum value to the request property `field_type`
  - added the new `url` enum value to the request property `field_type`
  - added the media type `application/json` for the response with the status `403`
  - added the non-success response with the status `429`
  - added the optional property `company_id` to the response with the `201` status
  - added the optional property `options/select_option_colors` to the response with the `201` status
  - removed the `invalid_json` enum value from the `error` response property for the response status `400`
  - response property `detail` list-of-types was narrowed by removing types `array` from media type `application/json` of response `400`

---

[Operation](https://skmtc.dev/slant/apis/slant-public-api-v1/docs/v1/custom_fields/post.md) - [API](https://skmtc.dev/slant/apis/slant-public-api-v1.md) - [Page](https://skmtc.dev/slant/apis/slant-public-api-v1/changes/v1/custom_fields/post)