Paying an order Shop to Bank: Charge 42.00; Alt: Enough funds; Bank to Shop: Approved; Else: Declined; Bank to Shop: Refused; Note: The card number never reaches the shop Shop Shop Bank Bank alt [Enough funds] [Declined] Shop → Bank: Charge 42.00 1. Charge 42.00 Bank → Shop: Approved 2. Approved Bank → Shop: Refused 3. Refused Note: The card number never reaches the shop The card number never reaches the shop