answer:Go through all my transactions to see where I may have made an error on where I placed the money. IE, maybe there is a check where I was asked to split the amount and actually gave the customer money 500 out of a 1000 dollar check and put in the deposit but forgot to account for the withdrawl. It can happen if the person changed their mind mid way during the transaction and it was made out to cash or if it was a cashiers check. If I cannot find the money then you go to the lead cashier. Sometimes money sticks and money that you may have giving to the lead cashier and it may have still have your missing bills in them. So you both count it. Or any money you traded with other cashiers. But honestly for that question, I guess I would’ve said it would never happen because you count your money twice before wrapping and when you exchange money with other cashiers, you make sure to count the money given you and that they count the money you give them. Short of someone somehow breaking into your drawer, there should never be a shortage, unless another tell takes over your drawer while you are out ill. Then follow up with the top. I was a cashier. I counted everything 3 times to be absolutely sure.