We were getting the below error in the event log every time we were clicking on Populate Containers button while creating a new synchronization connection for User Profiles.
Application Server Administration job failed for service instance Microsoft.Office.Server.Search.Administration.SearchServiceInstance (90579710-4ed5-47e9-a3d8-de997f96262e).
Reason: An update conflict has occurred, and you must re-try this action. The object SearchDataAccessServiceInstance was updated by CONTOSO\administrator, in the OWSTIMER (2720) process, on machine CRM2011. View the tracing log for more information about the conflict.
Stopping the Timer Service, clearing the Configuration Cache and restarting the Timer Service helped us to fix the issue.