I am having the same problem, and will follow. I only just started paying for cloud storage because after years of a workflow on one computer, I now need to access my collection on two computers. But I have many, many long notes. Also: of about 6K items, only about 1.7K are syncing to the cloud and the other computer. Not sure if these issues are related.

thanks for the response! I can't tell what notes. When I click the red exclamation point, I see "The note “From an interview: "how do you get to th…” is too long to sync. Shorten the note and sync again." I then click "show item in library" and... nothing happens. I'm not taken to any specific item. I tried searching for "from an interview" in my library (including notes) and I get no results.

Edit: I forgot to add, it's very possible that there are images in there. I often take screenshots during presentations and store them in my note from the presentation. Is there no solution to this? hunting down every single one of these notes is not an option for me. And, I can't imagine that's what's causing almost 4000 items to not sync.

Debug ID: D2141368222

An update: since I ran the sync again to get the Debug ID, all items are now showing up in all 3 places (original personal device A, web library, new work device B.) Yay!

However....
1 - the error about a note being too long is still showing up on device A. and I'm still unable to see which item this is.
2 - my attached PDFs, still stored on device A in the zotero storage folder, are not syncing to the web library or device B. I'm getting the "attached file could not be found at the following path..." I'm also seeing that my online storage is at 0MB... which makes no sense.
3 - same as 2) for images embedded in notes... and maybe for other types of attachments.

It's an item in your trash. Empty your trash or search for JTPEF3UW or JKFXU3X3 (the parent item) there. We'll fix the button to select items in the trash in the next version. It should still show up for a search for the text in the trash.

I'm getting the "attached file could not be found at the following path..." I'm also seeing that my online storage is at 0MB... which makes no sense.

Data syncing for My Library is failing, so it's not continuing on to file syncing. Provide another Debug ID if you're still having trouble after resolving the above.

You've disabled file syncing for groups.

So I deleted the item in the trash and then got a couple more errors about notes that were "too long" (although not that long actually) or had images... but just making an edit to those notes seemed to "update" them somehow so that they no longer held up the process. Looks like things are all synced now! Thank you so much for the help with this. Is there anything I should double check or do differently moving forward to prevent future problems like this? (for one thing I realize i need to clear my trash more often.)

Ok. thanks all for all this help!

No, it’s a server-side limit.