Scenario: User profiles got created when SAML claims user login to SharePoint for the first time.
What i am trying to implement now is the sync of those User profiles from WCF service via BCS. I have created External content type and i am bringing all users info (Firstname, lastname ... etc) via BCS from WCF service. As Users are external and doesnt have a domain account, how can i sync User profiles from WCF service? Does users must have domain accounts for synchronization of User profile from wcf service via BCS?