PayPal Express Checkout - 2013 Guia do Utilizador descarregar pdf (Página 39)

Express Checkout for Payflow 39

Express Checkout Transaction Types

Void

A Void transaction voids any of the following transaction types:

 Order

 Authorizations (Authorization, Do Authorization, or Do Reauthorization)

NOTE: You can use a Void transaction only on transactions that have not yet settled. To refund

a buyer’s money for a settled transaction, you must use a Credit transaction.

If you void an unsettled transaction, the full authorized amount of the original transaction

becomes void and can no longer be captured.

NOTE: As part of its internal process, PayPal makes reasonable effort to process authorization

reversals for void transactions for debit and credit cards. However, there is no

guarantee authorization reversal requests will be honored.

To set up a Void transaction, you must pass the following parameters in the request string:

 Set ORIGID=PNREF (PNREF value returned in the response to the original Authorization or

Order)

 Set TRXTYPE=V

This is an example Void transaction request with the required parameters set.

TRXTYPE=V

&TENDER=P

&PARTNER=partner

&USER=user

&VENDOR=vendor

&PWD=pwd

&ORIGID=EFHP0CDBF5C7

Credit

A Credit transaction refunds the buyer for a settled transaction. Credit transactions are

permitted only against existing Sale and Delayed Capture transactions.

To set up a Credit transaction request, you must pass the following parameters in the request

string:

 Set ORIGID=PNREF (PNREF value returned in the response to the original Sale or Delayed

Capture)

 Set TRXTYPE=C

 Set the value for AMT if the amount of the credit differs from the original Sale or Delayed

Capture transaction

This is an example Credit request with the required parameters set:

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PayPal Express Checkout - 2013 Guia do Utilizador Página 39