The user observes the issue when the Cisco CallManager databases are not in sync or there is some issue with the Cisco Real-time Information Server (RIS) Data Collector.
In order to resolve this issue, complete these steps:
Use the DBHelper utility in order to navigate to c:\program files\cisco\bin and double-click on dblhelper.exe. It displays with green smiley faces for each Cisco CallManager server. If it does not, choose Reinitialize and Republish. The DBHelper tool attempts to fix any database corruptions.
The DBHelper can also look into name resolution problems and report if there are issues with the name resolution scheme on a network.