---
title: "PM · Tasks · Set custom field values on a task"
method: PATCH
path: "/api/v1/pm/tasks/{task_id}/custom-fields"
tags: ["tasks"]
---

# PM · Tasks · Set custom field values on a task

`PATCH /api/v1/pm/tasks/{task_id}/custom-fields`

## Request

- Base URL: `https://api.simplified.com`
- URL: `https://api.simplified.com/api/v1/pm/tasks/{task_id}/custom-fields`
- Auth: API key in header `Authorization`

Bulk-update custom field values on a task. Keys are custom field UUIDs,
values are validated server-side against each field's type configuration.

## Path parameters

- `task_id` string, required

## Headers

- `Organization` string
- `Space` string

## Request body

- TaskCustomFieldsUpdateRequest: Bulk-update custom field values on a single task. Keys are custom field UUIDs, values are validated against the field's type configuration server-side.
  - `custom_fields` object, required: Map of custom field UUID → value.

## Response `200`

Task with updated custom field values.

- unknown

---

[API](https://skmtc.dev/simplified/apis/project-manager.md) - [All operations](https://skmtc.dev/simplified/apis/project-manager/llms.txt) - [OpenAPI document](https://skmtc.dev/simplified/apis/project-manager/revisions/9ef06e133a13?raw)