Validated Addresses (AVS)
Some online stores require that the credit card a customer uses MUST match the issuing bank’s billing address on file in order for the sale to be approved.
So….Here's another fact few people don’t seem to know:
You can have more than one valid address on a credit card. You can call your issuer and have them add your summer location and even your cousin's house so the address will validate. You can add a permanent second address or even a temporary one. So if you are going away for the summer, you can add your summer address and make it valid only while you are there.
Each issuing bank has its own policy concerning additional addresses on debit/credit cards so check with them first!