internal verification code
...cardholder name, card number, expiration date and internal verification code...
The "internal verification code" wouldn't be the CVV/CV2 that must never, ever, on pain of immediate revocation of card handling facilities, be stored, would it?
Payment Card Industry - Time to make an example of a serial offender, by revoking their privileges as per the contract they have with you. Or is the % they pay you worth more than the cost to you and cardholders?