---
title: "Changes to Retrieves the active custom field definitions mapped to an entity type, in display order, including data type, multi-select flag, required flag, visibility, and the active options for Dropdown fields. Use the returned CustomFieldDefinitionID (or Name) to set values via the CustomFields collection on the Task and Project endpoints. Returns an empty list when the account's Custom Fields feature is disabled."
method: GET
path: "/api/CustomFieldDefinition"
---

# Changes to Retrieves the active custom field definitions mapped to an entity type, in display order, including data type, multi-select flag, required flag, visibility, and the active options for Dropdown fields. Use the returned CustomFieldDefinitionID (or Name) to set values via the CustomFields collection on the Task and Project endpoints. Returns an empty list when the account's Custom Fields feature is disabled.

`GET /api/CustomFieldDefinition`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 1 of 3 revisions.

- **2026-08-30** `e99843f3c878` — 1 info

## Changes

- **2026-08-30** `e99843f3c878` — 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/avaza/apis/avaza-api-documentation/docs/api/CustomFieldDefinition/get.md) · [API](https://skmtc.dev/avaza/apis/avaza-api-documentation.md) · [Page](https://skmtc.dev/avaza/apis/avaza-api-documentation/changes/api/CustomFieldDefinition/get)