Azure AD Sync – Unable to Update this Object – Values Associated with Another Object

ERROR MESSAGE: User@contoso.com<mailto:user@contoso.com> Unable to update this object because the following attributes associated with this object have values that may already be associated with another object in your local directory services: [UserPrincipalName user@contoso.com<user@contoso.com>;]. Correct or remove the duplicate values in your local directory. Please refer to http://support.microsoft.com/kb/2647098 for more information on identifying objects with duplicate…

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