Developer's Guide

Credit Card Transactions
Example Address Verification Service Request Parameter List
44 Payflow Pro Developer’s Guide
Example Address Verification Service Request Parameter List
This example request include the address verification service request parameters STREET and
ZIP:
TRXTYPE=A&TENDER=C&PWD=x1y2z3&PARTNER=PayPal&VENDOR=SuperMerchant&USER=Supe
rMerchant&&ACCT=5555555555554444&EXPDATE=0308&AMT=123.00
&STREET=5199
Maple
&ZIP=98765
Example Address Verification Service Response
In this example, the address value matches the value in the bank’s records, but the ZIP code
does not. The AVSZIP response is N.
RESULT=0&PNREF=VXW412345678&RESPMSG=APPROVED&AUTHCODE=123456&AVSADDR=Y&AVSZ
IP=N&IAVS=X
Card Security Code Validation
The card security code is a 3- or 4-digit number (not part of the credit card number) that is
printed on the credit card. Because the card security code appears only on the card and not on
receipts or statements, the card security code provides some assurance that the physical card is
in the possession of the buyer.
This fraud prevention tool has various names, depending on the payment network. Visa calls it
CVV2 and MasterCard calls it CVC2. To ensure that your customers see a consistent name,
PayPal recommends use of the term card security code on all end-user materials.
IMPORTANT: To comply with credit card association regulations, do not store the CVV2
value.
On most cards, the card security code is printed on the back of the card (usually in the
signature field). All or part of the card number appears before the card security code (567 in
the example). For American Express, the 4-digit number (1122 in the example) is printed on
the front of the card, above and to the right of the embossed account number. Be sure to
explain this to your customers.