Try each of the following steps in order until the issue is resolved:

 
     
    • Ensure the correct credit card type is selected.
     
    • Ensure the correct credit card number is entered:
      • AmEx begins with 3.
       
      • Visa begins with 4.
       
      • Mastercard begins with 5.
       
      • Discover begins with 6.


         
      • If using a batch, delete the gift row and re-enter it.