The CVV Number ("Card Verification Value") on your credit card or debit card is a 3 digit number on VISA®, Mastercard® and Discover® branded credit and debit cards. On your American Express® branded credit or debit card it is a 4 digit numeric code.
Your CVV number can be located by looking on your credit or debit card.
Providing your CVV number to an online merchant proves that you actually have the physical credit or debit card - and helps to keep you safe while reducing fraud.
CVV numbers are also known as CSC numbers ("Card Security Code"), as well as CVV2 numbers, which are the same as CVV numbers, except that they have been generated by a 2nd generation process that makes them harder to "guess".
Responses and Descriptions:
CVV matches (M): The CVV provided matches the information on file with the cardholder's bank.
CVV does not match (N): The CVV provided does not match the information on file with the cardholder's bank.
CVV is not verified (U): The card-issuing bank received the CVV but did not verify whether it was correct. This typically happens if the processor declines an authorization before the bank evaluates the CVV.
CVV not provided (I): No CVV was provided.
Issuer does not participate (S): The CVV was provided but the card-issuing bank does not participate in card verification.
CVV not applicable (A): The CVV was provided but this type of transaction does not support card verification.
CVV skipped (B):CVV checks were skipped for this transaction.