The custom attribute definition that contains the fields to update. This endpoint
supports sparse updates, so only new or changed fields need to be included in the request.
Only the following fields can be updated:
name
description
visibility
schema
for a Selection
data type. Only changes to the named options or the maximum number of allowed
selections are supported.
For more information, see
Update a location custom attribute definition.
To enable optimistic concurrency
control, specify the current version of the custom attribute definition.
If this is not important for your application, version
can be set to -1.