Advanced Features Guide

Express Checkout Advanced Features Guide April 2012 67
Implementing Parallel Payments
Integrating Parallel Payments by Using the NVP API
5
If errors are returned, check the response data in the PAYMENTERROR field for each payment. It
is possible that errors are returned only for a subset of the payments, while other payments are
successful. For failed payments, you should ask the buyer for an alternate payment method.
Example
The following is an example SetExpressCheckoutrequest with parallel payments
integrated.
Request Parameters
[requiredSecurityParameters]
&METHOD=SetExpressCheckout
&RETURNURL=http://...
&CANCELURL=http://...
&PAYMENTREQUEST_0_CURRENCYCODE=USD
&PAYMENTREQUEST_0_AMT=300
&PAYMENTREQUEST_0_ITEMAMT=200
&PAYMENTREQUEST_0_TAXAMT=100
&PAYMENTREQUEST_0_DESC=Summer Vacation trip
&PAYMENTREQUEST_0_INSURANCEAMT=0
&PAYMENTREQUEST_0_SHIPDISCAMT=0
&PAYMENTREQUEST_0_SELLERPAYPALACCOUNTID=[e-mail]
&PAYMENTREQUEST_0_INSURANCEOPTIONOFFERED=false
&PAYMENTREQUEST_0_PAYMENTACTION=Order
&PAYMENTREQUEST_0_PAYMENTREQUESTID=CART26488-PAYMENT0
&PAYMENTREQUEST_1_CURRENCYCODE=USD
&PAYMENTREQUEST_1_AMT=200
&PAYMENTREQUEST_1_ITEMAMT=180
&PAYMENTREQUEST_1_SHIPPINGAMT=0
&PAYMENTREQUEST_1_HANDLINGAMT=0
&PAYMENTREQUEST_1_TAXAMT=20
&PAYMENTREQUEST_1_DESC=Summer Vacation trip
&PAYMENTREQUEST_1_INSURANCEAMT=0
&PAYMENTREQUEST_1_SHIPDISCAMT=0
&PAYMENTREQUEST_1_SELLERPAYPALACCOUNTID=[e-mail]
&PAYMENTREQUEST_1_INSURANCEOPTIONOFFERED=false
&PAYMENTREQUEST_1_PAYMENTACTION=Order
&PAYMENTREQUEST_1_PAYMENTREQUESTID=CART26488-PAYMENT1
&L_PAYMENTREQUEST_0_NAME0=Depart San Jose Feb 12 at 12:10PM Arrive in
Baltimore at 10:22PM
&L_PAYMENTREQUEST_0_NAME1=Depart Baltimore Feb 15 at 6:13 PM Arrive in San
Jose at 10:51 PM
&L_PAYMENTREQUEST_0_NUMBER0=Flight 522
&L_PAYMENTREQUEST_0_NUMBER1=Flight 961
&L_PAYMENTREQUEST_0_QTY0=1
&L_PAYMENTREQUEST_0_QTY1=1
&L_PAYMENTREQUEST_0_TAXAMT0=50
&L_PAYMENTREQUEST_0_TAXAMT1=50
&L_PAYMENTREQUEST_0_AMT0=50
&L_PAYMENTREQUEST_0_AMT1=150