As a means of detecting fraudulent transactions, AVS matches the address sent with the transaction to the actual billing address of the cardholder. When address verification is requested, the returned field will contain the mailing address on the cardholders’ monthly statement.

E-xact’s Address Verification String # Request Property, VerificationStr1 needs to be sent through with every transaction to receive an AVS Response. This field cannot exceed 29 characters in length. If any of the address fields are not available or not applicable, they may be omitted. If available, the last 5 or 9 digits, without embedded spaces, should be the zip code. Numbers are not spelled out. (First Street becomes 1ST Street, Second becomes 2ND, etc) Spaces are only required between a numeral and the ZIP code. The Address is provided in the VerificationStr1 field and must be formatted according to processor specifications.