while AD synchronization we are getting below error like "
2134002] Error executing an adhoc projection!
[1777018] Error executing workflow (Provisioning) of synchronization project
Error executing projection step (user) of projection configuration (Provisioning (Provisioning)).
[1777219] Error executing projection step (user)!
[1777004] Method (Update object (Update)) could not be executed successfully.
A constraint violation occurred.
Object not committed successfully. Retrying using single property commit.
Property userPrincipalName should be set.
Internal error in COM access layer: number: 8007202F, description: A constraint violation occurred.
A constraint violation occurred.
"
when we checked in AD we could see that all the attributes are set correctly.How can we check the constrained limit of AD attributes.
Please help me.