I use the Plastic plug-in from 360Works to do credit card processing within FileMaker. It’s a daunting task at first, but once it is setup, it’s absolutely great. This guide explains how to setup a First Data credit card gateway API for use with FileMaker using the Plastic 2 plug-in.

 

From First Data you will first need to download the Web API from their site.

Inside the file you’ll find multiple certificates and passwords.
We need three files:
XXX.auth.txt
XXX.ks
XXX.ks.pw.txt

In XXX.auth.txt there is our username and password.
Use this in the CCProcessPayment function.
We’ll need to add XXX.ks to our database inside a container file.
XXX.ks.pw.txt Is used in the CCSetCertificate function.

FileMaker Functions

CCSetCertificate

CCSetCertificate ( _plastic::firstdata_cert ; "ks.pw.text_password" )

CCProcessPayment

CCProcessPayment (
"XXX.auth.txt_Username"; //Merchant Account User ID
"XXX.auth.txt_Password"; //Password
$amt ; //Charge Amount
$cardnum ; //Card Number
$exp_date ; //Card Expiration Date
"verificationCode=" & $cw2 ; //Check Verification Code
//Optional Information
"chargeDescription=" & "Order " & INVOICES::Order Number;
"invoiceNumber=" & INVOICES::Invoice ID;
"firstName=" & Customer::B_FirstName;
"lastName=" & Customer::B_LastName;
"country=" & Customer::B_Country;
"zip=" & Customer::B_PostalCode;