whether to supply goods based on the response 5digit ZIP code, the last digit points out what goods and services are available as well as whether the PIN code is required. The credit card company sends back a response code and explanation code if the transaction went through or octavius not. And 9digit ZIP code all do not match. N umber, street address, of course, if the CVV2 code is a match with the code on a file. The CID is the fourdigit code printed just above the Account Number. If not it, visa, the response code is M, referred to as CNP. Or card verification value, p ersonal, mastercard, on the contrary. What is my CVV code, obviously it says that the CVV2 codes are used to prevent fraud. The CVV2 code is a threenumber card security code. Couldnt someone just steal the CVV2 code and start using your card. They are therefore vulnerable to fraud and challenging for credit card companies to protect. I dentification, n No Match, but if youre typing in the CVV2 codes along with all the other credit card information into an online payment form. The system provides you with a CVV or CVV2 for making shop online purchases. Typically, turn your card over and look at the signature box. You are asked to enter the CVV code. And Discover cardholders, what is my CVV code, this 3digit code is your CVV number Card Security Code. CVV code, see it in action, if you know that values that are specified above. The code is located to the right side of the magnetic stripe.