Oooh my time to shine.

I have caused this exact issue to a manufacturing plant once.

The ordering system we used to order manufacturing parts and also non manufacturing things was my system. Orders were loaded in and processed with multiple sign-offs to ensure legal ok and everything is above board. The system was from the 80s, but still worked.

One day, I got a call about an error when someone was making a critical order. It was failing and crashing the system. Panic was beginning to set in after we couldn't figure it out for a couple of hours.

Well it turned out there was an "amendment" limit. Someone was trying to order toilet paper (from a supplier across the road from the plant), and had amended the order 999 times, and it was failing on the 1000th because they were being lazy, and had done this same thing for many years.

A new order after deleting the old one fixed it.

We had two hours of TP left, if it had run out, the plant would have closed.