A missed call notification could not be generated for user %1 because the assigned dial plan %2 is not known. Problems with ...

A missed call notification could not be generated for user %1 because the assigned dial plan %2 is not known. Problems with this user's dial plan will not be reported again for another hour.
Cause: The dial plan is no longer defined, or permission to access Active Directory objects may not be granted to this process.
Resolution:
Assign the user to a new dial plan, or adjust the permissions on Active Directory.

A location profile has not been created that matches this dial plan. Until a location profile is created, the UM play-on-phone ... A message received from the message queue was not of the expected format or version. This message was ignored. Message queue ... A missed call notification could not be generated because the template '%1' is not supported by any of the Exchange UM servers ... A missed call notification could not be generated because the user has an unknown Exchange UM dial plan. Missed call notifications ... A missed call notification could not be generated for user %1 because the assigned dial plan %2 is not known. Problems with ... A missed call notification could not be generated. Dial plan %1 does not have any Exchange UM servers defined. Failure occurrences: ... A new computer account will be created with a randomly generated password for initial logon. You must use this account for ... A non standard message was found in the message queue. The message is dropped. Cause: This may be caused if a non UTF-8 message ... A non-standard message was found in the message queue. The message will be ignored. Cause: CDR messages must be in the UTF-8 ...