When I was working in sales, making a mistake usually just resulted in a lost sale. Even though the consequences are lower, I still understand what is at stake in the accounting department. I can’t deny that I have messed up in a way that affected existing clients a few times, but I’ve always been able to work with them to make sure they are satisfied and continue to be loyal customers. I’ve found what you do in response to making a mistake is what really makes the difference.