A cashier did a manual entry of the cardholders number for a card that would not swipe this weekend. The number was entered properly, but the expiration date was off by one year. We got an approval code anyway.
He caught it as it was going through, so he called me over to do a void. I recalled the sale for the void but RMS would NOT let me void the transaction. It said an invalid card number was detected. NOT GOOD.
I eventually made it work in a round about kind of way... I did a Force Return (made up term) with the same approval code then re-sold it with the proper cc number (to keep our sales for the day balanced), then manually went into the database and maked the 2 bunk entries as voids to avoid any settlement issues.
We had this type of issue with the actual 16 digit card number in the past and changed our masking technique to # to avoid this type of problem, but there is not much you can do with a number that is the proper length.
WHY can an approval code be given to a BAD NUMBER?
The even bigger question WHY can that transaction not be voided anymore. (you used to be able to void it)?????
I do not expect an answer in the forum. I will be submitting this query to Tech Support, but thought people should know.