Transfer enqueue failed — check server logs for details
Admin transfer route returned 500 when creating the transfer job failed.
Why this happens
Unexpected DB/queue error after validation. Clearer 400 messages (trash, offline) appear first when those apply.
Diagnose and fix
1. Check app logs for the enqueue exception.
2. Confirm source/destination are active and not in trash.
3. Retry from Transfer queue — move files between servers.
4. See Could not load transfer queue if the queue UI itself fails.