The Invalid Credit Card Numbers section in the Collection folder is used to configure the credit card numbers that you do not want to accept.

· Add - Displays the form where you enter credit card numbers that you will not accept. You can add only one credit card number at a time from this form. After testing this feature, you may want to add your credit card testing numbers to the list of invalid credit card numbers.
· Delete - Displays the form where you enter credit card numbers that you would like to delete from the list of invalid credit card numbers. After deleting these numbers here, you will be accepting them as valid. You can delete only one credit card number from the list at a time from this form.

· List - Displays a list of all invalid credit card numbers entered. You can add and delete numbers here as well, using the New button to add and the Delete button to delete entries.

· Close - The Close button will close the Invalid Credit Card Numbers form and return you to the Configuration program.