Today at work I got an error message while testing our software:
Incorrect visit Id format found. Error Code: 2002

I don't think I've been so happy to get an error message. The clinics have had this phantom error that pops up several times a day, but I can never reproduce it. And end users are oh so helpful..."it won't save" is all I get. But today, after a conversation with my boss I got a brainwave about how to try to reproduce the problem. And what do you know...it worked! Now I can actually fix this problem and get it off my list.