Integration Guide

PayPal Payments Pro Integration Guide April 2012 49
Getting Started With Express Checkout
Testing an Express Checkout Integration
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2. Specify your API credentials.
Use the following parameters for a signature:
USER=API_username
PWD=API_password
SIGNATURE=API_signature
3. Specify the token returned by PayPal when it redirects the buyer’s browser to your site.
PayPal returns the token to use in the token HTTP request parameter when redirecting to
the URL you specified in your call to the SetExpressCheckout API.
TOKEN=tokenValue
4. Specify the Payer ID returned by PayPal when it redirects the buyer’s browser to your site.
PayPal returns the Payer ID to use in the token HTTP request parameter when redirecting
to the URL you specified in your call to the SetExpressCheckout API. Optionally, you
can obtain the Payer ID by calling the GetExpressCheckoutDetails API.
PAYERID=id
5. Specify the amount of the order including shipping, handling, and tax; include the currency
if it is not in US dollars.
Most of the time, this will be the same amount as you specified in your
SetExpressCheckout call, adjusted for shipping and taxes.
PAYMENTREQUEST_0_AMT=amount
PAYMENTREQUEST_0_CURRENCYCODE=currencyID
6. Specify the same payment action that you specified in SetExpressCheckout.
PAYMENTREQUEST_0_PAYMENTACTION=Sale
Testing an Express Checkout Integration
You can test your Express Checkout integration in the Sandbox.
This example shows how to simulate your web pages using HTTP forms and supplying the
values for API operations from these forms. You can use this strategy for your initial testing;
however, for more complete testing, you need to replace these forms with your web pages
containing your actual code.