
Gateway Developer Guide and Reference 31 July 2012 111
Processors Requiring Additional Transaction Parameters
Heartland, Additional Credit Card Parameters
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Heartland, Additional Credit Card Parameters
In addition to the core credit card parameters, Heartland accepts the parameters described
below.
Litle Additional Credit Card Parameters
MERCHSVC (Optional) Defaults to the city where the merchant outlet is located for retail and to
the merchant’s phone number for non-retail. For example, 800 111-1111. This
information is usually displayed in the account holder’s statement.
Character length and limitations: 13 alphanumeric characters
Field Description
INVNUM (Optional) Merchant invoice number. The merchant invoice number is used for
authorizations and settlements and, depending on your merchant bank, will appear on
your customer's credit card statement and your bank reconciliation report. If you do
not provide an invoice number, the transaction ID (PNREF) will be submitted.
NOTE: Not supported by Payflow Link.
Character length and limitations: 17 alphanumeric characters
MERCHDESCR (Optional) Use this parameter to pass in your DBA name and other data describing
the transaction (default: merchant name). This information is usually displayed in the
account holder’s statement.
Character length and limitations: 25 alphanumeric characters
MERCHSVC (Optional) Defaults to the city where the merchant outlet is located for retail and to
the merchant’s phone number for non-retail. For example, 800 111-1111. This
information is usually displayed in the account holder’s statement.
Character length and limitations: 13 alphanumeric characters
Field Description
AUTHDATE Required for Force transactions. Authorization date.
Character length and limitations: 11alphanumeric characters
CUSTOMERID (Optional) Customer identification.
Character length and limitations: 18 alphanumeric characters
Field Description
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