We have an Okta instance that is tied to Active Directory. All users are created in AD and fed into Okta. The profiles are mastered by AD. We had added several custom attributes to the Okta profile and would like to update them via the Okta API. These are custom fields that are not mapped from AD. In all attempts when we try to update via API we get
{"errorCode":"E0000023","errorSummary":"Operation failed because user profile is mastered under another system"}
Does anyone know if this is possible? Contacted Okta support and read all the docs and it seems like it's possible but can't find anything that indicates how to configure the custom attributes to be writable from another source.

