Amazon DevPay
Developer Guide (API Version 2007-12-01)

Where Customers Manage the Payment Method

If customers have issues related to the payment method they use to pay for DevPay products (such as needing to update credit card information), they should follow your link to the Application Billing page and then click the Payment Method tab. Following is an example page.

Payment Method Page

A single payment method is used for all DevPay products the customer owns. The customer can change the payment method, add a new payment method, or change information related to the payment method, such as the card expiration date or the billing address.