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 attribute values
When implementing SMTP soft-matching after a cutover
migration, you may see this error if objects in the on-premises AD were not
properly prepared to sync.
To fix this, you need access the object in ADUC and set the “E-mail:”
attribute to the primary SMTP email address of the user in Office 365. This is
how SMTP soft-matching works.
This run another sync and the on-premises AD account should
sync up with the Office 365 account. For help with forcing a sync, please see
this article:
