Synchronizing the base data with the UserManagement Database is documented on application server. See log file in <WebOffice web application>\WEB-INF\work\WebOffice author.log.
By default log entries will be made on "ERROR" level. The log level can be set on "ALL" or "WARN" level for trouble shooting reasons by changing the file WebOffice author-Log.config in WebOffice author installation directory on administrative server (i.e. C:\Program Files (x86)\SYNERGIS\SYNERGIS WebOffice author 10\WebOffice author-Log.config).