Question

I am now testing some IPN for our subscription system.
from this document https://www.paypal.com/cgi-bin/webscr?cmd=p/acc/ipn-subscriptions-outside
the documentation is complete but i need some more confirmation on these..

1. when is the first time paypal will send an IPN when user doing new registration for a subscription?

2. do “amount1” and “amount3” also sent after the first payment?

3. from these combination of parameters in the documentation above. how i can tell that the notification is for a trial payment? or a regular payment or for 1st payment?

I cant find a tool for doing subscription IPN test.. even in the paypal sandbox/developer site. i wonder if anybody can suggest me how to easily test these things.

Answer 1

you have to create business a/c and personal a/c on sandbox( https://developer.paypal.com/ ).

Do ipn Setting in business a/c

Sandbox can send you the transaction data (also called Instant Payment Notification) to a specific url. With Instant Payment Notification, PayPal sends payment notification messages with encrypted code to the specified URL for each payment you receive. Follow the instructions below to setup Instant Payment Notification.

1. Go to the sandbox( https://developer.paypal.com/ ) website and log in to your account(business account).
2. Click “Profile” at the top of the page.
3. Click “Instant Payment Notification Preferences” in the Selling Preferences column.
4. Click “Edit IPN Settings.”
5. Enter the notification URL and select “Receive IPN messages.”
6. Click “Save.”

You can send customized emails from the Instant Payment Notification data. Please see http://paypaltech.com/SG2 for sample scripts.

we can customize sample script code according our need.