The Address Verification System (AVS) is used to verify the identity of the person claiming to own the credit card. The system will check the billing address of the credit card provided by the user with the address on file at the credit card company. If it matches, a "Y" (Yes) is displayed in this box. If it does not, an "N" (No) is displayed.
AVS verifies the numeric portions of a cardholders billing address. For example, if your address is 101 Main Street, Highland, CA 92346, AVS will check 101 and 92346. Sometimes AVS checks additional digits such as an apartment number, other times it does not. As a result you may receive false negatives from e-commerce verification systems, which may require manual overrides.