--- title: "Changes to Create a custom field" method: POST path: "/custom-fields" --- # Changes to Create a custom field `POST /custom-fields` > Every recorded change to this operation, newest first. ## Timeline Changed in 6 of 63 revisions. - **2026-10-12** `40bf3229d58f`: 1 info - **2026-10-11** `dfb481067e5a`: 4 breaking, 101 info - **2026-09-12** `e85c0a2a3253`: 4 info - **2026-08-28** `fe3adb90ea45`: 1 info - **2026-08-14** `ad855d921ee9`: 1 breaking, 7 info - **2026-07-26** `3e347e631c35`: 2 info ## Changes - **2026-10-12** `40bf3229d58f`: 1 info - the response property `data` became required for the status `200` - **2026-10-11** `dfb481067e5a`: 4 breaking, 101 info - the response property `data/number_metadata/currency` became nullable for the status `200` - the response property `data/number_metadata/decimal_places` became nullable for the status `200` - the response property `data/number_metadata/format` became nullable for the status `200` - the response property `data/select_metadata/options` became nullable for the status `200` - added the non-success response with the status `401` - added the non-success response with the status `429` - the response property `data/created_at` became required for the status `200` - the response property `data/description` became required for the status `200` - the response property `data/id` became required for the status `200` - the response property `data/is_read_only` became required for the status `200` - the response property `data/label` became required for the status `200` - the response property `data/object_type` became required for the status `200` - the response property `data/slug` became required for the status `200` - the response property `data/source` became required for the status `200` - the response property `data/type` became required for the status `200` - the response property `data/updated_at` became required for the status `200` - the response property `request_id` became required for the status `200` - the response property `request_id` became required for the status `400` - the response property `request_id` became required for the status `403` - the response property `request_id` became required for the status `404` - the response property `request_id` became required for the status `500` - removed the `currency` enum value from the `data/number_metadata/format` response property for the response status `200` - removed the `duplicate_object` enum value from the `code` response property for the response status `400` - removed the `duplicate_object` enum value from the `code` response property for the response status `403` - removed the `duplicate_object` enum value from the `code` response property for the response status `404` - removed the `duplicate_object` enum value from the `code` response property for the response status `500` - removed the `duration` enum value from the `data/number_metadata/format` response property for the response status `200` - removed the `email_bounced` enum value from the `code` response property for the response status `400` - removed the `email_bounced` enum value from the `code` response property for the response status `403` - removed the `email_bounced` enum value from the `code` response property for the response status `404` - removed the `email_bounced` enum value from the `code` response property for the response status `500` - removed the `internal_error` enum value from the `code` response property for the response status `400` - removed the `internal_error` enum value from the `code` response property for the response status `403` - removed the `internal_error` enum value from the `code` response property for the response status `404` - removed the `internal_error` enum value from the `code` response property for the response status `500` - removed the `internal_issue_reply_not_allowed` enum value from the `code` response property for the response status `400` - removed the `internal_issue_reply_not_allowed` enum value from the `code` response property for the response status `403` - removed the `internal_issue_reply_not_allowed` enum value from the `code` response property for the response status `404` - removed the `internal_issue_reply_not_allowed` enum value from the `code` response property for the response status `500` - removed the `invalid_api_token` enum value from the `code` response property for the response status `400` - …65 more - **2026-09-12** `e85c0a2a3253`: 4 info - added the optional property `code` to the response with the `400` status - added the optional property `code` to the response with the `403` status - added the optional property `code` to the response with the `404` status - added the optional property `code` to the response with the `500` status - **2026-08-28** `fe3adb90ea45`: 1 info - added the non-success response with the status `403` - **2026-08-14** `ad855d921ee9`: 1 breaking, 7 info - request property `object_type` was restricted to a list of enum values - added the new `account` enum value to the request property `object_type` - added the new `contact` enum value to the request property `object_type` - added the new `issue` enum value to the request property `object_type` - added the new `meeting` enum value to the request property `object_type` - added the new `opportunity` enum value to the request property `object_type` - added the new `project` enum value to the request property `object_type` - added the new `task` enum value to the request property `object_type` - **2026-07-26** `3e347e631c35`: 2 info - added the new optional request property `select_options/items/ai_description` - added the optional property `data/select_metadata/options/items/ai_description` to the response with the `200` status --- [Operation](https://skmtc.dev/usepylon/apis/pylon-api/docs/custom-fields/post.md) - [API](https://skmtc.dev/usepylon/apis/pylon-api.md) - [Page](https://skmtc.dev/usepylon/apis/pylon-api/changes/custom-fields/post)