Automatic renewal notices can report will report on many errors like 'on_reserve', 'restriction' , 'overdue' , 'auto_too_late' , 'auto_too_much_oweing' , 'too_unseen', 'too_many', etc. You can control which errors are reported on via TT in the notice. It would be nice if their was a simpler way ( system preference ) where libraries could chose which errors get reported on and which are skipped.