PayPal Payflow Pro - 2007 Guia do Utilizador descarregar pdf (Página 17)

Payflow Pro Developer’s Guide 17

Performing Credit Card Transactions

About Credit Card Processing

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. Card security code is described on

page 37.

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.

z 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.

N OTE: PayPal recommends that you do not store credit card numbers. If you must store

numbers, encrypt and store them behind properly configured firewalls. You should

also consider whether and how to use the merchant-defined fields COMMENT1

and COMMENT2 to help tie reports to your orders/customers or to report on other

information about the transaction.

z If or how you want to integrate with other systems, such as order fulfillment, customer

service, and so on. You may wish to connect these systems directly to Payflow Pro 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.

z You may want to discuss, with your Internet Merchant Acquirer, practices that help you to

obtain the most advantageous rates.

Complying With the E-commerce Indicator (ECI)

Some processors support a software flag called E-commerce Indicator (ECI) that indicates that

the associated transaction is an internet transaction. Payflow Pro complies with ECI basic

requirements for all supported processors.

If you use the Buyer Authentication Service, then the ECI values reflects the Authentication

status. See Payflow Pro Fraud Protection Service User’s Guide.

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 that you are not signed up to accept, the Payflow SDK responds with

RESULT code 23, “Invalid account number,” or the processor returns a message that the

customer is not signed up for the card type. For details on RESULT codes and response

messages, see Chapter 4, “Responses to Credit Card Transaction Requests.” 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).

To accept additional credit card types, you must contact your acquiring bank (the merchant

that holds your Internet Merchant Account) and ask them to add the card type to your account.

Upon notification from your Acquirer that you can start accepting the card type, you must add

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PayPal Payflow Pro - 2007 Guia do Utilizador Página 17