Developer's Guide

Submitting Credit Card Transactions
Core Credit Card Parameters
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52 31 July 2012 Gateway Developer Guide and Reference
AMT (Required) Amount (Default: U.S. based currency).
Limitations: Specify the exact amount to the cent using a decimal point. For example,
use 34.00 not 34. Do not include comma separators. For example, use 1199.95 not
1,199.95. Your processor or Internet Merchant Account provider may stipulate a
maximum amount.
10 numeric characters plus decimal
COMMENT1 (Optional) Merchant-defined value for reporting and auditing purposes.
Limitations: 128 alphanumeric characters
COMMENT2 (Optional) Merchant-defined value for reporting and auditing purposes.
Limitations: 128 alphanumeric characters
CVV2 (Optional) A code printed (not imprinted) on the back of a credit card. Used as partial
assurance that the card is in the buyer’s possession.
Limitations: 3 or 4 digits
RECURRING (Optional) Identifies the transaction as recurring. It is one of the following values:
 Y – Identifies the transaction as recurring.
 N – Does not identify the transaction as recurring (default).
This value does not activate the Payflow Recurring Billing Service API. If the
RECURRING parameter value is Y in the original transaction, this value is ignored
when forming credit, void, and force transactions. If you subscribe to the Payflow
Fraud Protection Services:
 To avoid charging you to filter recurring transactions that you know are reliable,
the fraud filters do not screen recurring transactions.
 To screen a prospective recurring customer, submit the transaction data using
PayPal Manager’s Manual Transactions page. The filters screen the transaction in
the normal manner. If the transaction triggers a filter, follow the normal process to
review the filter results.
NOTE: If your transaction is declined and the PAYMENTADVICECODE response
parameter is supported by your processor, a PAYMENTADVICECODE value is
returned representing the reason that the transaction was declined. Obtain the
meaning of PAYMENTADVICECODE values from your acquiring bank.
Character length and limitations: 1 alpha character
SWIPE (Required for card-present transactions only) Used to pass the Track 1 or Track 2
data (card’s magnetic stripe information) for card-present transactions. Include either
Track 1 or Track 2 data—not both. If Track 1 is physically damaged, the point-of-sale
(POS) application can send Track 2 data instead.
The track data includes the disallowed = (equal sign) character. To enable you to use
the data, the SWIPE parameter must include a length tag specifying the number of
characters in the track data. For this reason, in addition to passing the track data, the
POS application must count the characters in the track data and pass that number.
Length tags are described in “Using Special Characters In Values” on page 43.
NOTE: SWIPE (card-present transactions) are not supported by the PayPal processor.
Limitations: Alphanumeric and special characters
Parameter Description