I recently had a coworker who would frequently get an error message while completing their time card. The message was slightly cryptic, something like “invalid cost center”, but no indication (in the message) of which line(s). This happened so often, that when they would call me to complain that they were getting an error, I usually already knew what error they were getting, but for some reason, they could never remember the steps to find & correct it and had to call me every time.