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 because the user has an unknown Exchange UM dial plan.

Missed call notifications could not be sent to at least %1 different users because they are all assigned to an unknown dial plan. This may represent an issue that is not specific to individual users. This message will not be repeated again for %2 hours even though the problem may persist.
Cause: A dial plan may have been removed or disabled, 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 Live Communications Server (LCS) 2003 or LCS 2005 product is installed on this computer. Lync Server 2010, Core Components ... 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 ...