# Remove custom app data key

Remove a single key from the user's custom app data for the requesting application. <br><br>**Required permissions**: `apps:edit`, `[appId]:edit`, `users:edit`.

Endpoint: DELETE /v1/users/{user_id}/custom_app_data/{key}
Security: ClientAccessToken

## Path parameters:

  - `user_id` (string, required)
    The ID of the user

  - `key` (string, required)
    The custom app data key to remove

## Response 404 fields (application/json):

  - `message` (string, required)

  - `error_code` (number, required)
    Example: 404