I'm sorry for the delay getting back to you.

The flow really depends on the method you're using to setup the subscriptions. My library handles all of it, but you gotta know what features of PayPal you're using.

Are you using Payments Pro so you can accept credit card sign-ups directly (without any redirect through PayPal) or are you just going to be using Express Checkout?

Payments Pro costs $30/mo and then another $30/mo for the recurring aspect of it, so it can be rather costly. Express Checkout is free other than transaction fees, of course.

With Express Checkout the flow would be to call SetExpressCheckout and make sure to include the billing agreement parameters. This will give you back a TOKEN and then you redirect the user over to PayPal accordingly. The user signs in to their PayPal account and agrees to continue. PayPal then sends them back to your ReturnURL that you included with SetExpressCheckout.

Here, you can call GetExpressCheckoutDetails to obtain the buyer information from PayPal (optional). You can then call CreateRecurringPaymentsProfile using the token you got back in SEC. As long as you included the billing agreement info with your SEC request this will work just fine and create the profile accordingly.

If you are using Payments Pro (DoDirectPayment) then you would just use CreateRecurringPaymentsProfile by itself and include credit card details within that request instead of a token.

If you're using Payments Pro (PayFlow) then you would just use the PayFlow request directly and set the parameters to setup a recurring profile.

Hope that helps!

Hi Peter. Sorry for the delay getting back to you. The only parameter PayPal provides that really has anything to do with a discount is the shipping discount in Express Checkout. That's not really intended for a shopping cart discount, though. In most cases you'll simply need to include the discount as a line item on the transaction with a negative amount. Make sure your math calculates correctly so that the ITEMAMT + TAXAMT + HANDLINGAMT + SHIPPINGAMT = AMT.

Hi Afzal,

Check the value of the ACK parameter that comes in the result. This will be either Success, SuccessWithWarning, Failure, or FailureWithWarning.