PayPal - What is Instant Payment Notification (IPN)?

Instant Payment Notification, included with Website Payment products, Express Checkout, and Standard Checkout, is available to our Premier and Business members. Instant Payment Notification allows you to integrate your PayPal payments with your websites back-end operations, so that you get immediate notification and authentication of any PayPal payments and disputes you may receive.

*** The above information is for reference only, Please seek independent technical advice if found necessary.

PayPal - How does Instant Payment Notification work (IPN)?

When a customer makes a payment to you, PayPal will post a notification to your server at a URL you specify. Included in this notification will be all of your customers payment information (e.g. customer name, amount) as well as a piece of encrypted code.

When your server receives a notification, it must then post the information, including the encrypted code, back to a secure PayPal URL. PayPal will authenticate the transaction and send confirmation of its validity back to your server.

*** The above information is for reference only, Please seek independent technical advice if found necessary.

PayPal - How do I activate Instant Payment Notification (IPN)?

Ec2Biz E-Store System is already have notification variable, so do not need change setting in your profile.

For other system, you can activate Instant Payment Notification (IPN) from your Profile.

Note: Before activating IPN, please read the instructions to ensure that you can support the notification and authentication system.

Heres How:

1. Log in to your PayPal account.
2. Click the Profile subtab.
3. Click the Instant Payment Notification Preferences link in the Selling Preferences column.
4. Click Edit.
5. Click the checkbox and enter the URL to which you would like to receive HTML posts.
6. Click Save.

*** The above information is for reference only, Please seek independent technical advice if found necessary.

PayPal - What is a canceled reversal (IPN)?

The Canceled_Reversal status on your Instant Payment Notification is a new payment status which replaces the Canceled status. This means a reversal has been canceled (e.g. you, the merchant, won a dispute with the customer and the funds for the transaction that was reversed have been returned to you).

*** The above information is for reference only, Please seek independent technical advice if found necessary.