I am a developer of a website who's Payment processing API was written in 2010 using PHP. The problem we are dealing with is that we did not require a CVC code (back then listed as a CVV) and am unsure of the variable needed to transmit to auth.net so that the processor recognizes the CVC code and returns the variable correctly. I realize this is ancient code, and we are rebuilding the site on a modern platform, but until then any help would be much appreciated.
