Checking information about latest sync
You can check detailed information about the latest sync you have done by going to Sync > View sync log.
The sync log has information about each content type under its own tab. By clicking a tab, you see detailed information concerning the content type’s syncing, that is, where the information was synced to, which items were synced, and which items were deleted.
If there were any problems syncing some items, those items are also listed. If the issue why the items were not synced is known, then that is added to the list as well.