Comment 3 for bug 1777207

In my experience, it's primarily used as a reference of what has been checked in - to see where you are in the stack, to make sure that every item has been scanned, as a secondary method of special statuses in case an alert gets overlooked, etc.

It's also used when patrons want receipts of everything they are turning in.

Staff at every library I've ever worked at and every ILS I've ever worked with would be infuriated if it went away.