Withdrawing cash from an ATM is a business process between a customer and the ATM

$($bank system$).$ The customer must first insert a bankcard to start the process. Once

inserted, the ATM identifies the bankcard and then returns it to the customer. The

customer takes the bankcard and the ATM then requests the customer$$s PIN associated

with that card. The customer enters the PIN and the ATM then validates the card$/$PIN

combination. If the PIN does not match the card, the customer is prompted to reenter

the PIN. Once a valid PIN has been entered the ATM displays available account

options. The customer selects withdraw cash and the ATM displays available

withdrawal options. The customer selects the amount to withdraw and the ATM verifies

that funds are available in the customer$$s account. If funds are not available the ATM

displays the available funds and gives the customer the option to select a different

amount. The customer can either select a different amount or cancel the transaction