Developer's Guide

Table Of Contents
Credit Card Transactions
Submitting Void Transactions
36 Payflow Pro Developer’s Guide
Credit Transaction Parameter Strings
This is an example Credit transaction string (non-referenced credits not allowed):
TRXTYPE=C&TENDER=C&PARTNER=PayPal&VENDOR=SuperMerchant&USER=SuperMerchant&P
WD=x1y2z3&ORIGID=VPNE12564395
This is an example Credit transaction string (non-referenced credits allowed):
TRXTYPE=C&TENDER=C&PARTNER=PayPal&VENDOR=SuperMerchant&USER=SuperMerchant&P
WD=x1y2z3&ACCT=5555555555554444&EXPDATE=0308&AMT=123.00
Submitting Void Transactions
The Void transaction (TRXTYPE=V) prevents a transaction from being settled.
As part of its internal process, PayPal makes reasonable effort to process authorization
reversals for void transactions for debit and credit cards if the processor supports it for a given
card type. Because the honoring of authorization reversals is ultimately decided by the bank or
issuer, there is no accurate way to determine if an individual bank or issuer has honored an
authorization reversal request.
NOTE: For more information on authorization reversals, see
http://en.wikipedia.org/wiki/Authorization_hold.
When To Use a Void Transaction
Follow these guidelines:
z You can void Delayed Capture, Sale, Credit, Authorization, and Voice Authorization
transactions. You cannot void a Void transaction.
z You can only use a Void transaction on a transaction that has not yet settled. To refund a
customers money for a settled transaction, you must submit a Credit transaction.
COMMENT2 COMPANYNAME BILLTOCOUNTRY CUSTCODE
CUSTIP EMAIL EXPDATE FIRSTNAME
MIDDLENAME LASTNAME INVNUM PONUM
SHIPTOCITY SHIPTOCOUNTRY SHIPTOFIRSTNAME SHIPTOMIDDLENAME
SHIPTOLASTNAME SHIPTOSTREET SHIPTOSTATE SHIPTOZIP
STATE STREET SWIPE PHONENUM
ZIP
T
ABLE 4.6 Fields copied from original to Credit transaction