In SharePoint Central administration, while starting timer job to start synchronization from AD to Sharepoint, following error is thorwn.
An update conflict has occurred, and you must re-try this action. The object UserProfileADImportJob Name=SharePoint Production 2016 User Profile Service Application_UserProfileADImportJob was updated by XXXDomain\xxxUser, in the OWSTIMER (1920) process, on machine XXXMachineName. View the tracing log for more information about the conflict.
Clearing the SharePoint Configuration Cache as per guide here:
SharePoint Central administration-The object UserProfileADImportJob Name=