PayPal Website Payments Pro - 2011 - Hosted Solution Betriebsanweisung PDF herunterladen (Seite 45)

Order Processing

This chapter walks you through the end to end order processing experience. It includes

information about verifying the status and authenticity of the order before fulfilling it.

Verifying Transaction Status and Authenticity

When the buyer successfully completes a transaction, they are redirected either to the PayPal

confirmation page or a website you specified in the return variable or on the Settings page

in the Profile section (as outlined in “Simple Hosted Solution Integration” on page 11). When

the browser is redirected to the website you specified, a Transaction ID is appended to it.

When you receive the redirect (URL with Transaction ID), you must verify that the order was

completed successfully on PayPal before sending the items to the buyer. You can do so by

checking the confirmation email sent to you by PayPal or by verifying the transaction history.

Validate Instant Payment Notification (IPN)

IPN enables you to receive messages about transaction payments and activity from PayPal

through asynchronous, server-to-server communication. This allows you to integrate your

online payments with your order fulfillment process.

Through IPN, you receive messages for the following:

 Payments and their status (pending, complete, or denied)

 Authorisations, chargebacks, disputes, reversals, and refunds.

After a transaction has been processed, PayPal sends an IPN to the notification URL specified

in your transaction using the parameter notify_url, or in your PayPal Profile. You must

verify that the Transaction ID, transaction amount, and other order specific parameters such as

Invoice ID that are sent in the IPN match with the information you have in your order

processing system. For more details, refer to

Instant Payment Notification Guide.

Fulfilling Order

After you have verified the authenticity of the payment amount and status, you can fulfil the

order by shipping the item to the buyer.

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PayPal Website Payments Pro - 2011 - Hosted Solution Betriebsanweisung Seite 45