The Unified Messaging server has encountered a data error while trying to read information is stored in Active Directory during the call with ID: “%1”. This event may be caused when the UM configuration data that is stored in Active Directory is internally inconsistent. Additional information follows: %2

Details
Product: Exchange
Event ID: 1108
Source: MSExchange Unified Messaging
Version: 8.0
Symbolic Name: ADDataError
Message: The Unified Messaging server has encountered a data error while trying to read information is stored in Active Directory during the call with ID: “%1”. This event may be caused when the UM configuration data that is stored in Active Directory is internally inconsistent. Additional information follows: %2
   
Explanation

This Warning event indicates an exception error in data validation when MSExchange Unified Messaging (UM) retrieves signaling session information from the Active Directory® directory service during an incoming call. Data validation is performed to make sure that each voice mail that is processed by the computer that has the Unified Messaging server role installed can be processed without errors. One function of data validation is to make sure that the voice mail and the signaling session information are in the expected data type. The signaling session information includes data such as the Microsoft® Exchange attributes of the user who initiates the call. Signaling session information also includes the Microsoft Exchange attributes of the user who receives the call.

This event may be caused when inconsistent UM configuration data is stored in Active Directory.

   
User Action

To resolve this warning, contact Microsoft Product Support. For information, visit the Contact Us page of the Microsoft Help and Support Web site.

If you are not already doing so, consider running the tools that Microsoft Exchange offers to help administrators analyze and troubleshoot their Exchange environment. These tools can help you make sure that your configuration is in line with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. Go to the Toolbox node of the Exchange Management Console to run these tools now. For more information about these tools, see Toolbox in the Exchange Server 2007 Help.

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