One that I came across was on a recurring sales receipt because that's the only way to auto-pay with a card, and when the card wouldn't process the receipt stat

One that I came across was on a recurring sales receipt because that's the only way to auto-pay with a card, and when the card wouldn't process the receipt status would still say "paid". Had to click into the receipt to see the card payment failed. After a few years it was fixed, so that it says "paid (failed)".