AVS codes

AVS is a security feature used in card-not-present transactions that verifies the billing address and ZIP provided by the cardholder matches the address on file with the cardholder's bank. Visa requires an AVS check, utilizing the Postal Code, in order to receive standard interchange rates.

Code	Description	Applicable Schemes
A	Street address matches, ZIP does not	Visa, Mastercard, American Express
B	Street address matches. Postal code not verified due to incompatible formats	Visa
C	Street address and postal code not verified due to incompatible formats	Visa
D	Street address and postal code both match (international-only)	Visa
E	Information invalid or not allowed for this card type	Visa
F	Street address and postal code both match (UK-only)	Visa
G	Not verified for international payment, or issuer does not support verification	Visa
I	Not verified	Visa
M	Street address and postal code both match (international-only)	Visa
N	Neither street address or postal code matches	Visa, Mastercard, American Express
O	Card member name and street address match	AMEX
P	Postal Code matches, street address unverifiable due to incompatible formats (international-only)	Visa
R	Retry due to system not being available	Visa, Mastercard, American Express
S	Not supported. If present, replaced with U (for domestic) or G (for international)	Visa, Mastercard, American Express
U	Address information is unavailable	Visa, Mastercard, American Express
W	9-Digit ZIP matches, street address does not	Visa, Mastercard, American Express
X	5-Digit ZIP and street address both match	Visa, Mastercard, American Express
Y	9-Digit ZIP and street address both match	Visa, Mastercard, American Express
Z	5-Digit ZIP matches, street address does not	Visa, Mastercard, American Express

CVC codes

CVC, also known as card verification code or card security code, is a three- or four-digit (Amex) number on the back or front (Amex) of credit and debit cards.

Code	Description
M	Match
N	No match
P	Not processed
S	Should be on card but not so indicated
U	Issuer Not Certified
X	No response from association
blank	No CVV2/CVC data available for payment