We use SCOM 2012 with the MP for LYNC 2013 to monitor our LYNC Servers. And be get this alert every day.
Alert: [LYNC] Users are not indexed in the database that should be.
Source: LS Address Book Web Query And Expand Distribution List Component [VM-LYF02.domain.no]
Path: VM-LYF02.domain.no
Last modified by: System
Last modified time: 2/27/2013 8:02:53 AM Alert description: Users are not indexed in the database that should be.
Expected indexed user count: 0
Actual indexed user count: 2072
Cause: User replication issue.
Resolution:
Run Update-CsAddressBook to synchronize all accounts.