Developer's Guide
Table Of Contents
- Payflow Pro Developer’s Guide
- Contents
- Preface
- Introduction
- Installing and Configuring the Payflow APIs
- Performing Credit Card Transactions
- About Credit Card Processing
- Contents of a Transaction Request
- How To Format a Transaction
- Parameters Used in Credit Card Transactions
- Values Required by All Transaction Types
- Submitting Sale Transactions
- Submitting Authorisation/Delayed Capture Transactions
- When To Use Authorisation/Delayed Capture Transactions
- Required Authorisation Transaction Parameters
- Typical Authorisation Transaction Parameter String
- Required Delayed Capture Transaction Parameters
- Delayed Capture Transaction: Capturing Transactions for Lower Amounts
- Delayed Capture Transaction: Capturing Transactions for Higher Amounts
- Delayed Capture Transaction: Error Handling and Retransmittal
- Submitting Voice Authorisation Transactions
- Submitting Credit Transactions
- Submitting Void Transactions
- Submitting Inquiry Transactions
- Recharging to the Same Credit Card (Reference Transactions)
- Submitting Card-Present (SWIPE) Transactions
- Card Security Code Validation
- Responses to Credit Card Transaction Requests
- Testing Payflow Pro Credit Card Transactions
- Activating Your Payflow Pro Account
- Processor Details
- Verbosity: Viewing Processor- Specific Transaction Results
- Additional Reporting Parameters
- XMLPay
- Index
Payflow Pro Developer’s Guide 37
Performing Credit Card Transactions
Card Security Code Validation
“TRXTYPE=S&TENDER=C&PARTNER=PayPal&USER=SuperMerchant&PWD=SuperMerchant&SWI
PE[40]=;4912000033330026=15121011000012345678?&AMT=21.00”
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.
N OTE: Check with your acquiring bank to determine whether they support card security code
validation.
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.
Processing Platforms and Credit Cards Supporting Card Security Code
TABLE 3.4 Processing platforms supporting card security code
Processing Platform
American
Express JCB Diners
Master
Card Visa
American Express APAC X————
Citibank Singapore (CSIN) —————
First Data Resources International
(FDI)
XXXXX