With AVS, the buyer enters their address at checkout and submits the order. The processor then compares the address information to the address on file with the issuer. Note that only numeric values (street number, box number, zip code, etc.) are compared.Â  A response code is generated based on one of 6 conditions: full match, no match, partial match address, match-zip code, data unavailable, or international address. The merchant can then take action based on that response.