---
title: "Updating an existing Custom Field Set"
method: PUT
path: "/custom_field_sets/{id}"
tags: ["Custom Field Sets"]
---

# Updating an existing Custom Field Set

`PUT /custom_field_sets/{id}`

## Request

- Base URL: `https://api.mavenlink.com/api/v1`
- URL: `https://api.mavenlink.com/api/v1/custom_field_sets/{id}`
- Auth: none declared

To update a custom field, the current user must be the Account Administrator.

NOTE: `subject_type` cannot be changed.


This endpoint returns structured Custom Field Set objects.
As with all Kantata OX API endpoints, the returned data will be referenced in sorted order in the `results` array
and will be indexed by ID in the `custom_field_sets` top-level JSON key.
Please see our [Response Format](#section/Response-Format) section for more information.

## Path parameters

- `id` integer, required

## Query parameters

- `include` string

## Request body

- object
  - `custom_field_set` object
    - `name` string: The name of the custom field set.
    - `subject_type` string: Subject type cannot be changed.

## Response `200`

Custom Field Set has been updated.

- object
  - `count` integer
  - `meta` object
    - `count` integer
    - `page_count` integer
    - `page_number` integer
    - `page_size` integer
  - `results` object[]
    - `key` string
    - `id` string
  - `custom_field_sets` object
  - `external_references` object
  - `custom_fields` object

## Other responses

- `400`: Bad Request
- `401`: Unauthorized request
- `403`: Forbidden request
- `404`: Page Not Found
- `422`: Unprocessable Entity
- `503`: Service is unavailable

---

[API](https://skmtc.dev/kantata/apis/kantata-ox-api-documentation.md) - [All operations](https://skmtc.dev/kantata/apis/kantata-ox-api-documentation/llms.txt) - [OpenAPI document](https://skmtc.dev/kantata/apis/kantata-ox-api-documentation/revisions/9d4ebed2fa98?raw)