Address Verification Service – the billing address entered is incorrect and does not accurately or completely match the billing address registered with the card issuer or credit card company. This sometimes occurs when a person has moved house and not updated their card issuer for example, but could also be as simple as a misspelling.
Cardholder must contact their bank if transaction believed to be genuine. Ensure that card issuer has the most up to date billing address on file before attempting to make further payment.