Batch posting error message

One of our supervisors recently ran into an error when posting the day's batches at EOD. Unfortunately they didn't take a screenshot of the error, but they said the message indicated that several batch statuses had changed or "no longer existed." They were still able to post what remained, and we don't think anythign fell through the cracks, but I'm hoping that someone can shed some light on what may have happened here.

Thanks!