Developer's Guide
Table Of Contents
- Content
- Preface
- Introducing the Gateway Checkout Solutions
- Secure Token
- Configuring Hosted Checkout Pages
- Payflow SDK
- Sending a Simple Transaction to the Server
- Submitting Credit Card Transactions
- Obtaining an Internet Merchant Account
- About Credit Card Processing
- Credit Card Features
- Planning Your Gateway Integration
- Core Credit Card Parameters
- Submitting Account Verifications
- Submitting Authorization/Delayed Capture Transactions
- Submitting Balance Inquiry Transactions
- Submitting Card Present (SWIPE) Transactions
- Submitting Credit (Refund) Transactions
- Submitting Inquiry Transactions
- When To Use an Inquiry Transaction
- Required Parameters When Using the PNREF
- Inquiry Transaction Parameter String Using the PNREF
- Required Parameters When Using the CUSTREF
- Inquiry Transaction Parameter String Using the CUSTREF
- Required Parameters When Using the Secure Token
- Inquiry Parameter String Using the Secure Token
- Submitting Partial Authorizations
- Submitting Purchasing Card Transactions
- Submitting Reference Transactions (Tokenization)
- Submitting Sale Transactions
- Submitting Soft Merchant Information
- Submitting Voice Authorization Transactions
- Submitting Void Transactions
- Using Address Verification Service
- Using Card Security Code
- Information for the PayPal Acquirer
- Testing Transactions
- Transaction Responses
- Processors Requiring Additional Transaction Parameters
- American Express Additional Credit Card Parameters
- Elavon Additional Credit Card Parameters
- First Data Merchant Services Nashville, Additional Credit Card Parameters
- First Data Merchant Services North, Additional Credit Card Parameters
- Heartland, Additional Credit Card Parameters
- Litle Additional Credit Card Parameters
- Cielo Payments, Additional Credit Card Parameters
- Paymentech Salem (New Hampshire) Additional Credit Card Parameters for American Express
- PayPal Credit Card Transaction Request Parameters
- SecureNet Additional Credit Card Parameters for American Express
- Vantiv Additional Credit Card Parameters
- WorldPay Additional Credit Card Parameters
- TeleCheck Electronic Check Processing
- Payflow Header Parameters
- Submitting Purchasing Card Level 2 and 3 Transactions
- About Purchasing Cards
- About Program Levels
- About American Express Purchasing Card Transactions
- American Express Purchasing Card Transaction Processing
- Elavon (Formerly Nova) Purchasing Card Transaction Processing
- First Data Merchant Services (FDMS) Nashville Purchasing Card Transaction Processing
- First Data Merchant Services (FDMS) North Purchasing Card Transaction Processing
- First Data Merchant Services South (FDMS) Purchasing Card Transaction Processing
- Global Payments - Central Purchasing Card Transaction Processing
- Global Payments - East Purchasing Card Transaction Processing
- Heartland Purchasing Card Transaction Processing
- Litle Purchasing Card Transaction Processing
- Cielo Payments Purchasing Card Transaction Processing
- Paymentech Salem (New Hampshire) Purchasing Card Transaction Processing
- Paymentech Tampa Level 2 Purchasing Card Transaction Processing
- SecureNet Purchasing Card Transaction Processing
- TSYS Acquiring Solutions Purchasing Card Transaction Processing
- Vantiv Purchasing Card Transaction Processing
- WorldPay Purchasing Cards Transaction Processing
- VERBOSITY: Processor-Specific Transaction Results
- Country Codes
- Codes Used by FDMS South Only
- Additional Processor Information
- Payflow Link Migration
- Payflow Gateway MagTek Parameters
- Payflow Gateway FAQs
Submitting Credit Card Transactions
Planning Your Gateway Integration
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60 07 January 2014 Gateway Developer Guide and Reference
process is also useful for evaluating information in the response, such as whether the issuer
verifies the billing address, and so on. Electronic goods merchants, who fulfill the order
immediately, can use the one-step process. Check with your Internet Merchant Account
provider for suggestions on the best method for you.
Whether or how to use risk management tools such as address verification service and card
security code. For the address verification service, if the initial transaction submits the data,
the issuer checks the street address and the zip code against the billing address on file for
the consumer.
Card security code refers to a 3- or 4-digit number that appears on the back of most credit
cards. On American Express, the number appears proceeding and to the right of the
embossed card number. Card security code is known by other names, such as CVV2,
depending on the type of card. If card security code data is submitted, the issuer can notify
you whether the number matches the number assigned to the card.
It may also be possible to implement additional safeguards yourself or to use a fraud
service. You might want to discuss risk management with your Internet Merchant Account
provider.
Whether to store information in your local database or use PayPal Manager reports to
manage the data. You may want to store shipping information in your system, or you may
prefer to send the information to PayPal with the transaction and report on it later.
NOTE: Consider whether and how to use COMMENT1 and COMMENT2 to help tie reports to
your orders/customers or to report on other information about the transaction.
If or how you want to integrate with other systems, such as order fulfillment, Customer
Service, and so on. You may want to integrate your systems directly for capturing funds,
issuing refunds/credits, and so on. Alternatively, you may prefer to perform these steps
manually using PayPal Manager. Either way, PayPal recommends that you monitor
transaction activity using PayPal Manager.
Whether to discuss with your internet Merchant Acquirer practices that help you to obtain
the most advantageous rates.
Complying With E-commerce Indicator
Some processors support a software flag called E-commerce Indicator (ECI) that indicates that
the associated transaction is an internet transaction. The Payflow SDK complies with ECI
basic requirements for all supported processors.
If you use Buyer Authentication, the ECI values reflect the authentication status.
Handling Credit Card Type Information
The Payflow SDK does not check the credit card types that you are accepting. If a customer
uses a card type you do not accept, the SDK responds with RESULT value 25, “Invalid host
mapping,” or the processor returns a message that the customer is not signed up for the card
type. Optionally, you can provide your customer with a list of the card types that you accept
(in a drop-down list or menu, for example).