Data for this user has not been imported. An internal resource invited to a conference by this user does not exist in AD, ...

Lync Server 2010

Data for this user has not been imported. An internal resource invited to a
  conference by this user does not exist in AD, is improperly homed or has
  not yet been synchronized by UR. If the invitee still exists in AD, retry
  the import for this user after synchronization is complete. If the invitee
  no longer exists in AD, use Filter mode to remove the invitee from the XML
  and retry the import.

Data for this conference directory has not been imported. A user organizing a conference listed in this conference directory ... Data for this conference directory has not been imported. This conference directory could not be located. This may be because ... Data for this conference directory has not been imported. This conference directory has a duplicate with the same id. One ... Data for this conference directory has not been imported. This conference directory is not currently homed on this pool. ... Data for this user has not been imported. An internal resource invited to a conference by this user does not exist in AD, ... Data for this user has not been imported. This user does not exist in AD, is improperly homed or has not yet been synchronized ... Data for this user has not been imported. This user's delegate does not exist in AD, is improperly homed or has not yet been ... Data MCU Archiving agent is not available. Cause: The message queuing service is not available Resolution: Ensure the message ... Data MCU Archiving agent is not available. Data archiving location: %1 Cause: The data archiving file share could not be ...