Best answer by Keith N
Hello everyone. Thanks for posting about this. The team is actively working on an issue where adding >500 tracks to the queue will cause a 1002 error when adding tracks to the queue. While the team works on this, the only workaround is to use smaller playlists or selections to add to the queue.
If the 1002 error appears without adding items to the queue, it is likely due to something regarding connectivity and interference. Please create a new topic and submit a diagnostic report. Any of the Sonos Staff, myself included, will be happy to take a closer look and advise on next steps.
Once we get more information about this, I will update this topic. Thanks for your patience.