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

Question

Getting this error from DirSync
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
[email protected];].  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.
Quick eyeball and couldn't see the cause in the user account so used the script here:
http://gallery.technet.microsoft.com/office/Fix-Duplicate-User-d92215ef
And got these outputs:
PS C:\Windows\System32\WindowsPowerShell\v1.0> Export-OSCADUserPrincipalName -UserPrincipalName "[email protected]" -Path .\outputs.csv
WARNING: Cannot find objects with specified duplicate user principal name
[email protected]
Found 0 user(s) with duplicate user principal name.
Where to from here?
Richard P

Answer 1

Hi,
Did you talk about the Microsoft Azure Active Directory Sync tool ?
If yes, this issue occurs if one or more of the following conditions are true:
An object in the on-premises Active Directory has an SMTP address that's the same as the SMTP address of the object that's reporting the problem.
An object in the on-premises Active Directory has a mail attribute that's identical to the object that's reporting the problem.
An object already exists in your organizational account and has the same SMTP address or mail attribute as the object in the on-premises Active Directory
More detail information, please refer to:
http://support.microsoft.com/kb/2520976/en-us
[Troubleshooting] Unable to update this object because the following attributes associated with this object
http://blogs.technet.com/b/aadsyncsupport/archive/2014/05/20/troubleshooting-unable-to-update-this-object-because-the-following-attributes-associated-with-this-object.aspx
Regards.
Vivian Wang