Below is a list of all possible AVS Responses:

CodeMessageResponse Definition
0ApprovedAddress verification was not requested.
AAddress MatchThe street address submitted matches what is on file.
BAddress MatchThe street address submitted matches what is on file.
The ZIP code does not match what was on file.
(EdgePay will Decline.)
CService UnavailableThis service is not supported.
DExact MatchThe street address submitted matches what is on file.
FExact MatchThe street address and ZIP code submitted match what is on file.
This applies to UK transactions.
GVersion UnavailableThe issuer does not participate in this service.
This applies to non-US issuers.
IVersion UnavailableThe AVS information was not verified.
MExact MatchThe street address submitted matches what is on file.
NNo MatchNeither the street address or ZIP code match what is on file.
(EdgePay will Decline.)
PZip MatchThe ZIP code submitted matches what is on file.
The street address does not match what is on file.
(EdgePay will Decline.)
RRetryThe issuer system is currently unavailable.
SServ UnavailableThis service is not supported.
UVer UnavailableAVS is unavailable.
WZip MatchThe nine character ZIP code
submitted matches what is on file.
XExact MatchThe nine character ZIP code
submitted matches what is on file.
YExact MatchThe five character ZIP code
submitted matches what is on file
ZZip MatchThe nine character ZIP code
submitted matches what is on file.
1Cardholder name and ZIP matchAMEX only;
The cardholder name
and ZIP code submitted matches what is on file.
2Cardholder name, address, and ZIP matchAMEX only;
The cardholder name, address,
and ZIP code submitted match what is on file.
3Cardholder name and address matchAMEX only;
The cardholder name
and address submitted match what is on file.
4Cardholder name matchAMEX only;
The cardholder name submitted match what is on file.
5Cardholder name incorrect, ZIP matchAMEX only;
The cardholder name does not match what is on file.
The ZIP code submitted matches what is on file.
(EdgePay will Decline.)
6Cardholder name incorrect, address and ZIP matchAMEX only;
The cardholder name does not match what is on file.
The address and ZIP code submitted matches what is on file.
(EdgePay will Decline.)
7Cardholder name incorrect, address matchAMEX only;
The cardholder name does not match what is on file.
The address submitted matches what is on file.
(EdgePay will Decline.)
8Cardholder, all do not matchAMEX only;
Neither the cardholder name,
address, or ZIP code match what is on file
(EdgePay will Decline.)

Below is the AVS Response once declined for having a mismatch Billing ZIP code.

{
"avsResponse": "No Match(N) : Neither the street address or ZIP code match what is on file.",
}