You can use the PUT /environments/{environmentId}/users/{userId} operation to update existing attribute properties. For PUT requests, the update operation removes any existing attribute property values omitted from the request body.

The recommended way to construct a PUT request is to perform a GET first and then use the response body to construct the PUT request body with your property value modifications.

The response data shows the updates for all attribute values specified in the request body.

Note: If the user does not have update access to an attribute, a 403 Forbidden error is returned if an update is attempted for that attribute.