One time I had a shipment that was a few million JPY and just out of habit I put the currency in as USD, fortunately, the system said "hey dummy, that duty sure

One time I had a shipment that was a few million JPY and just out of habit I put the currency in as USD, fortunately, the system said "hey dummy, that duty sure seems high" at which point I noticed the mistake and was like ahhhhhhh that could have been really bad. I was paranoid for like a week after that. I can't imagine being part of an error like this or that one Mars mission, oof.