During our last user group, I know the topic of Salesforce Sync Errors came up.
If I'm recalling the discussion correctly, I believe the issue was that the only way to determine the Sync Error details was to dig through the activity log.
However, I just realized today, that you can subscribe to all Salesforce Sync Errors using the notifications.
Can't remember if this exactly addresses the issue that came up, but thought I'd share regardless as I found it to be a helpful discovery.
Retrieving data ...