Multiple users have a badly formatted Unified Communications policy. The Unified Communications policy settings of at least ...

Multiple users have a badly formatted Unified Communications policy.

The Unified Communications policy settings of at least %1 different users has had problems within the last hour. 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: Active Directory settings may have become corrupt.
Resolution:
Verify that the voice policy is correct or assign valid voice policy to users.