PayPal Express Checkout - 2012 Podręcznik Użytkownika Pobierz pdf (Strona 16)

Getting Started With Express Checkout

Implementing the Simplest Express Checkout Integration

16 August 7, 2012 Express Checkout Integration Guide

For example, you might want to obtain the buyer’s shipping address from PayPal. You can

initiate a request specifying an API operation to obtain buyer details. The response from the

PayPal API server contains information about whether the request was successful. If the

operation succeeds, the response contains the requested information. In this case, the response

contains the buyer’s shipping address. If the operation fails, the response contains one or more

error messages.

Related information:

"Creating an NVP Request" on page 58

"Responding to an NVP Response" on page 62

Obtaining API Credentials

To use the PayPal API, you must have API credentials that identify you as a PayPal Business

or Premier account holder who is authorized to perform various API operations. Although you

can use either an API signature or a certificate for credentials, PayPal recommends you use a

signature.

IMPORTANT: Although you can have both a signature and certificate, you cannot use both at

the same time.

Setting Up the Express Checkout Transaction

To set up an Express Checkout transaction, you must invoke the SetExpressCheckout API

operation to provide sufficient information to initiate the payment flow and redirect to PayPal

if the operation was successful.

This example assumes that you have set up the mechanism you will use to communicate with

the PayPal server and have a PayPal Business account with API credentials. It also assumes

that the payment action is a final sale.

When you set up an Express Checkout transaction, you specify values in the

SetExpressCheckout request and then call the API. The values you specify control the

PayPal page flow and the options available to you and your buyers. You should start by setting

up a standard Express Checkout transaction, which can be modified to include additional

options.

To set up the simplest standard Express Checkout transaction:

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PayPal Express Checkout - 2012 Podręcznik Użytkownika Strona 16