PayPal Express Checkout - 2012 Guide de l'utilisateur télécharger pdf (Page 65)

Express Checkout Advanced Features Guide April 2012 65

Implementing Parallel Payments

Name-Value Pair Syntax Supporting Parallel Payments

The PayPal API uses a special syntax for NVP fields to support parallel payments.

The NVP interface to the PayPal API supports up to a maximum of 10 parallel payments in a

transaction. To accommodate this, request fields have the following format, where

n is a

number in the range 0 to 9 representing a payment.

PAYMENTREQUEST_

n_NVPREQUESTFIELDNAME

The first numbered field in a list of payments starts with n equal to 0, the second field has n

equal to 1, and so forth.

The response name format is:

PAYMENTREQUEST_

n_NVPRESPONSEFIELDNAME

NOTE: Even if your Express Checkout integration supports single payments only, you must

use this format. Specify

n=0 for single payment with version 63.0 or higher of the

Express Checkout API.

The payment information returned in the DoExpressCheckoutPayment response has the

same basic format; however, the field name starts with PAYMENTINFO:

PAYMENTINFO_

n_NVPRESPONSEFIELDNAME

The NVP API reference documentation shows the proper format and naming for every NVP

field that uses this syntax.

Examples:

The following syntax represents the total amount of the first payment:

1 2 ... 60 61 62 63 64 65 66 67 68 69 70 ... 107 108

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PayPal Express Checkout - 2012 Guide de l'utilisateur Page 65