Improve the "Synchronization failed" error messages
When you see a "Synchronization failed" message and a prompt to retry, not enough context is right now given to a) what caused the issue and b) therefore even with assistance from support, whether retrying is likely going to have an effect.
Ideally what we should be able to log in these cases is a human readable representation of the kind of entity that caused the sync failure to happen (if it was a 400), and a human readable explanation explaining also if a 500 had occurred.
In both cases it's of course likely that an update in the sync system or in the editor is going to be required to make the data sync successfully, but seeing this information would help a support person understand what's going on and provide more assistance, workarounds etc, or at least require the right kind of additional diagnostic information to be able to work with the problem further.