Manifest is missing

Still having problems syncing DTTG3. Today: Manifest is missing. Whatever is meant by that. Can anyone help?

By the way: two devices (smartphone/ iPad) have not finished syncing for a week. So annoying and basically no more desire for DT.

It means there is transactional sync data not found in the sync location.

In DEVONthink To Go’s Settings > Sync: Locations, left-swipe the iCloud location and choose Verify Thoroughly. Check for the results by touching the sync icon in the bottom toolbar. And this may take a little time to finish.