Settling and Refunding Transactions Programmatically

When you do not select the Do you want to settle immediately? check box in the co-branded user interface (see Configuring Default Button Values.), the buyer is not charged for the purchase. Instead, the purchase price is reserved against the chosen payment instrument. To charge the buyer for the purchase, you must settle the charge. A reserve authorization is valid only for seven days. After that, Amazon Simple Pay automatically cancels the transaction and notifies both you and the buyer.

You can settle the charge using the user interface on http://payments.amazon.com or you can send a Settle request to Amazon Flexible Payments Service. The one you choose typically depends upon the number of refunds or settlements you need to do and how automated you want to make your system. The greater the number of refunds or settlements, the more likely you are to complete these tasks programmatically. Settling and refunding using the online forms is described in the Amazon Simple Pay Getting Started Guide.