Developer's Guide

Gateway Developer Guide and Reference 31 July 2012 65
Submitting Credit Card Transactions
Submitting Purchasing Card Transactions
6
Example Partial Authorization
The following is an example partial authorization.
1. You submit the initial authorization as a partial authorization.
TRXTYPE=A&TENDER=C&AMT=100.00&ACCT=4111111111111111&EXPDATE=0119
&PARTIALAUTH=Y&VERBOSITY=HIGH
2. The card issuer notes that the card has a remaining balance of $80.00.
3. The card issuer sends a partial authorization for $80.00.
RESULT=0&PNREF=VRNS1A3B33C9&RESPMSG=Partial
Approval&AUTHCODE=11111&HOSTCODE=E&PROCAVS=U&TRANSTIME=2010-04-21
11:30:45&AMT=80.00&ORIGAMT=100.00&BALAMT=0&ACCT=1111&EXPDATE=0119&IAVS=X
RESPMSG is Partial Approval, AMT is now the actual amount approved, ORIGAMT is
the original requested amount, and BALAMT is the balance on the card.
Since the amount charged is greater than the amount available on the card, the response
sets the balance amount (BALAMT) to zero. If BALAMT is zero, check if there is a balance
due by comparing the original amount to the amount charged (ORIGAMT-AMT).
4. You can choose to perform one of the following tasks:
– Accept the $80.00 and request an alternate payment from the buyer for the additional
$20.00.
– Reject the partial authorization by sending the card issuer an authorization reversal
(void) for $80.
Submitting Purchasing Card Transactions
A purchasing card (also referred to as a commercial card, corporate card, procurement card or
business card) is a credit card that an employer requests to be issued. A purchasing card is
usually reserved for business-related charges. The card issuer provides specialized reporting
for this card type so the employer can monitor the use of the card. There is no method for
determining whether a card is a purchase card or a commercial card based on the card number.
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 Level 3 Transactions” on page 143.
NOTE: The PayPal processor does not support purchasing card transactions.