PA-DSS
Check basics about Payment Application Data Security Standard (PA-DSS) - https://www.pcisecuritystandards.org/security_standards/pa_dss.shtml
There is no silly question when it comes to card processing. Just lots of confusion and frustration. My goal is to offer a reference place where good people can find answers or directions for common questions and issues. I sincerely hope it will help you. Everything is based on what I keep being asked about so all questions and comments are welcome. I am here to help! Don't hesitate to call.