Integration Guide

Table Of Contents
Implementing 3-D Secure Transactions (UK Only)
Integration Overview
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88 April 2012 PayPal Payments Pro Integration Guide
3-D Secure is not supported for direct Recurring Billing and Reference Transactions. Cards
that require 3-D Secure authentication cannot use these APIs; however, cards where 3-D
Secure is optional can continue to process transactions without authentication. If you use
either of these features in your current integration, you must exclude the Maestro card type
from the available options.
NOTE: Merchants must register with Cardinal Commerce before using this feature.
For more information, see
Verified by Visa: http://www.visaeurope.com/personal/onlineshopping/verifiedbyvisa/main.jsp
MasterCard SecureCode:
http://www.mastercard.com/us/merchant/solutions/mastercard_securecode.html
Cardinal Centinel: http://www.paypal-business.co.uk/3Dsecure.asp
Integration Overview
To use 3-D Secure with PayPal, you must do the following. Each item is explained in detail
later in this document.
Register your company with Cardinal Commerce and download and install the Cardinal
Thin Client package.
Insert processing for 3-D Secure into your application’s debit or credit card payment flow
immediately before the direct payment API request.
Add additional fields to the direct payment API request.
Update your website with required 3-D Secure logos, status windows, and other
information for your customers.
Test your 3-D Secure integration using Cardinal’s testing facilities. PayPal’s Sandbox
cannot be used for testing 3-D Secure functionality.
Cardinal Commerce Registration and Installation
Before you can use Cardinal Centinel to obtain cardholder authentication:
1. Register with Cardinal by filling in a simple form:
http://www.paypal-
business.co.uk/3Dsecure.asp.
After you have registered, Cardinal Commerce acknowledges your 3-D Secure registration
by sending you an email and welcome pack, which includes information about next steps
and links for downloading their documentation and software.
2. Download and install the Cardinal Centinel Thin Client software. Refer to the Cardinal
documentation for installation instructions.