However regardless whether it's is successfully synchronized or not, you will always get a successful sync message.
But then, my objects is still not synchronized? So what is the problem ? How do I know whether it is an error or synchronization is still running ?
To have a detailed view on what happened and whether the synchronization is successful, go over to Event Viewer and open the Operations Manager log.
(Yes, Service Manager uses the same framework/engine model as Operations Manager R2)
Find events where the Event Source is "Lfx Service" and if there is an error you will be able to see something like this:
By now, you should be able to see what is the details of the error for the synchronization process.