What validator are you using? The newer validators depending on the model, version software will steal the bill if the validator can’t reject the bill for some reason the validator will steal the bill and not payout. It does this to prevent the bill from jamming up the bill validator and shutting it down.
It’s a good idea to keep track of how much money your bill
changer takes in and how much pays out. We audit our
changers 3 times a week when we pull the cash and add
coins. Let’s say we take in $255.00 so we should have dispensed 255 dollar
coins. If it’s off then there’s a problem somewhere.