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Developer Guide

AVS & CVV2 Response Codes

Below are the list of AVS & CVV2 response codes supported by FraudLabs Pro.

AVS Response Codes
AVS Code Description
A Street address matches, but 5-digit and 9-digit postal code do not match.
B Street address matches, but postal code not verified.
C Street address and postal code do not match.
D Street address and postal code match.
E AVS is invalid or not allowed for this card type.
G Non-U.S. issuing bank does not participate.
I Address not verified.
M Street address and postal code match.
N Street address and postal code do not match.
P Postal code matches, but street address not verified.
R System unavailable.
S Bank does not support AVS.
U System unavilable.
W Street address does not match, but 9-digit postal code matches.
X Street address and 9-digit postal code match.
Y Street address and 5-digit postal code match.
Z Street address does not match, but 5-digit postal code match.
CVV2 Response Codes
AVS Code Description
I Invalid
M CVV2 match
N CVV2 not match.
P Not processed.
S Service not supported or CVV2 not present on the card.
U Service not available