PayPal Gateway - 2013 Guía de usuario descargar pdf (Pagina 74)

Submitting Credit Card Transactions

Submitting Reference Transactions (Tokenization)

74 07 February 2013 Gateway Developer Guide and Reference

To obtain the best bank interchange rates for commercial cards, pass specific additional

transaction information. Purchasing card support and parameters vary from processor to

processor. See “Submitting Purchasing Card Level 2 and 3 Transactions” on page 151.

NOTE: The PayPal processor does not support purchasing card transactions.

Submitting Reference Transactions (Tokenization)

To recharge a credit card when you are not storing the credit card information in your local

database, you can perform a reference transaction. A reference transaction takes the existing

credit card information that is on file and reuses it. (Securely storing data for future reference

is also known as tokenization.)

The PNREF returned in the original transaction is valid for use in reference transactions for 12

months. You can also use the PNREF account verification returns in a reference transaction.

When To Use a Reference Transaction

Say that Joe Smith purchases a holiday gift from your website store and requests that you send

it by UPS ground service. That evening, Joe becomes concerned that the item might not arrive

in time for the holiday. So Joe calls you to upgrade shipping to second-day air. You obtain

Joe’s approval for charging an extra $10 for the upgrade. In this situation, you can create a

reference transaction based on the original authorization and charge an additional $10 to Joe’s

credit card without having to ask him again for credit card information.

NOTE: As a security measure, reference transactions are disallowed by default. Only your

account administrator can enable reference transactions for your account. If you

attempt to perform a reference transaction in an account that does not allow reference

transactions, Payflow returns RESULT value 117. See PayPal Manager online help for

instructions on setting reference transactions and other security features.

Sale and authorization transactions can use a reference transaction as a source of transaction

data. Payflow looks up the reference transaction and copies its transaction data into the new

sale or authorization. Fraud Protection Service filters do not screen reference transactions.

NOTE: When the Gateway looks up the reference transaction, it does not alter in any way the

transaction referenced or any other transaction in the database. A reference transaction

is a read-only operation. Payflow populates with data and acts upon the new

transaction only. It does not maintain any linkage between the reference transaction

and the new transaction.

You can also initiate reference transactions from PayPal Manager. See PayPal Manager online

help for details.

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PayPal Gateway - 2013 Guía de usuario Pagina 74