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GOAL: Successfully submit and retrieve credit card transactions/response codes from Coldfusion to the First Data Global Gateway e4 gateway. We don't need anything more than a Custom Tag or CFC that submits order form data to the gateway, receives the response codes for that submit, and prepares the response codes for further processing in a simple Coldfusion structure.
We have an existing solution in place using a Custom Tag and communicating with the Payflow Pro gateway. We'd like you to simply convert what we already have for use with the First Data Global Gateway e4 gateway.
Complete First Data Global Gateway e4 gateway API reference documentation is available, as is our current Coldfusion code base for Payflow Pro.
For additional security, per the above document, we'd like to use the https://api.globalgatewaye4.firstdata.com/transaction/v12 endpoint along with the HMAC hash security calculation: