With Directory Sync tool v1.0.6385.0012 and higher, administrators may notice a large volume of Error-level entries in the event log during Sync runs. These entries have a Source of FIMSynchronizationService, an EventID of 6941 and a Description generally starting with “ECMA2 MA export run caused an error”.
This is expected behavior. In old versions of DirSync, these events were suppressed by the tool, but the new version of the synchronization engine now logs this information to the event log. This is the same set of information that is sent to the Technical Notification Contact via e-mail.