---
title: "Modify custom fields on a service line"
method: PATCH
path: "/public/v2/service-lines/{serviceLineNumber}/custom-fields"
tags: ["Service Lines"]
---

# Modify custom fields on a service line

`PATCH /public/v2/service-lines/{serviceLineNumber}/custom-fields`

## Request

- Base URL: `https://starlink.com/api`
- URL: `https://starlink.com/api/public/v2/service-lines/{serviceLineNumber}/custom-fields`
- Auth: HTTP bearer

Required permission: Custom fields, Edit.<br/>Create, update, or delete custom fields on a service line. Set a key's value to JSON null to delete that key.

## Path parameters

- `serviceLineNumber` string, required

## Request body

- object

## Response `200`

Successfully modified custom fields

- CustomFieldV2ListServiceResponse
  - `errors` ValidationResult[], nullable
    - `memberNames` string[], nullable
    - `errorMessage` string, nullable
  - `warnings` ValidationResult[], nullable
    - `memberNames` string[], nullable
    - `errorMessage` string, nullable
  - `information` string[], nullable
  - `isValid` boolean
  - `content` CustomFieldV2[], nullable
    - `key` string, required: Custom field key.
    - `valueType` 'String' | 'Bool' | 'Enum', required: The type of value a custom field holds
    - `value` unknown, required

## Other responses

- `400`: Bad request. Invalid or missing parameter
- `401`: Unauthorized
- `403`: Missing required permission for this endpoint or resource
- `422`: Failed to modify custom fields

## Changes

- **2026-11-02** `dfd7014cfd6d`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/starlink/apis/starlink-management-api/changes/public/v2/service-lines/:serviceLineNumber/custom-fields/patch.md)

---

[API](https://skmtc.dev/starlink/apis/starlink-management-api.md) - [All operations](https://skmtc.dev/starlink/apis/starlink-management-api/llms.txt) - [OpenAPI document](https://skmtc.dev/starlink/apis/starlink-management-api/revisions/dfd7014cfd6d?raw)