- Introduction to Payments
- Standard Payment Processing
- Debit and Prepaid Card Processing
- Processing Debit and Prepaid Authorizations
- Airline Data Processing
- Japanese Payment Options Processing
- Processing Payments Using Credentials
- Customer-Initiated Transactions with Credentials on File
- No-Show Transactions
- Installment Payments
- Recurring Payments
On This Page
CVN Locations and Terminology
For Visa, Mastercard, Discover, Diners Club, UnionPay, and JCB, the CVN is a three-digit
number printed on the back of the card, to the right of the signature field. For
American Express, the CVN is a four-digit number printed on the front of the card, above
and to the right of the card number.

Each payment card company has its own name for this value:
- American Express and Discover call it the Card Identification Number (CID).
- JCB calls it the Card Authentication Value (CAV2).
- Mastercard calls it the Card Validation Code (CVC2).
- UnionPay calls it the Card Validation Number (CVN2).
- Visa calls it the Card Verification Value (CVV2).