This event indicates that an error occurred when trying a synchronization process and the process could not start because the configuration data did not pass validation. The configuration data that is to be synchronized from the computer that is running the Hub Transport server role to the computer that is running the Edge Transport server role must pass validation before synchronization can start. For example, valid Exchange topology data is required for Edge server to correctly operate. The exception specified in the event description provides more information about this failure.

It is a problem if this warning frequently occurs. Contact a Microsoft Support professional to resolve this issue. To contact a Microsoft Support professional, visit the Exchange Server Solutions Center. In the navigation pane, click Assisted Support Options and use one of the assisted support options to contact a Microsoft Support professional. Because your organization may have a specific procedure for directly contacting Microsoft Technical Support, be sure to review your organization's guidelines first.

If you are not already doing so, consider running the Exchange tools created to help you analyze and troubleshoot your Exchange environment. These tools can help make sure that your configuration aligns with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. To run these tools, go to the Toolbox node of the Exchange Management Console. To learn more about these tools, see Managing Tools in the Toolbox.