
Gateway Developer Guide and Reference 07 January 2014 115
A
Processors Requiring Additional
Transaction Parameters
Additional parameters are those required by individual processors beyond the core parameters.
Parameters are organized alphabetically by processor.
“American Express Additional Credit Card Parameters” on page 115
“Elavon Additional Credit Card Parameters” on page 121
“First Data Merchant Services Nashville, Additional Credit Card Parameters” on page 122
“First Data Merchant Services North, Additional Credit Card Parameters” on page 122
“Heartland, Additional Credit Card Parameters” on page 123
“Litle Additional Credit Card Parameters” on page 123
“Cielo Payments, Additional Credit Card Parameters” on page 125
“Paymentech Salem (New Hampshire) Additional Credit Card Parameters for American
Express” on page 125
“PayPal Credit Card Transaction Request Parameters” on page 128
“SecureNet Additional Credit Card Parameters for American Express” on page 133
“Vantiv Additional Credit Card Parameters” on page 138
“WorldPay Additional Credit Card Parameters” on page 140
American Express Additional Credit Card Parameters
In addition to the core credit card parameters, American Express accepts the parameters
described below to meet AMEX reporting and statement requirements.
PayPal recommends that you include these parameters if you would like to impact what
appears on AMEX statements and reports.
NOTE: The PayPal processor does not support SWIPE (card-present) transactions.
Retail Transaction Advice Addendum (for SWIPE transactions)
Field Description
L_DESCn (Optional) Description of this line-item (n is a line item number from 1 to 6).
Character length and limitations: 19 alphanumeric characters
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