I am using domain federation w/SSO and DirSync. I have a user tom@abc.com that is in AD with a 365 mailbox.
I deleted the tom@abc.com domain account and did a DirSync. I saw the user disappear from 365. Now I want to get him back.
I recreated the account in the on-premises AD with a new ObjectGUID and DirSynced to get the user to 365.
I cannot restore the user account due to a UPN conflict.
ran Restore-MsolUser -UserPrincipalName tom@abc.com -AutoReconcileProxyConflicts and got the error:
The specified user account cannot be restored because of the following error: Error type UserPrincipalName, Error Id Conflicts, Current value tom@abc.com, Suggested Value tom1@abc.com
Is there a better process to use?