The credit card add-on code was filled in incorrectly, resulting in an error message.

The credit card verification code refers to the additional code printed on the back of the credit card. It is also called CVV (CardVerificationValue), which is the credit card verification value, and some are also called CID, which is the credit card security code or personal security code, etc., all The names all refer to the same verification code.

Please note that this verification code does not refer to the credit card password. (Generally speaking, only credit cards issued domestically may have a password, while credit cards issued overseas do not have a password.) The display location is on the back of the credit card, with the top end of the signature in italics.