PayPal Gateway - 2013 Guía de usuario descargar pdf (Pagina 58)

Submitting Credit Card Transactions

Planning Your Gateway Integration

58 07 February 2013 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).

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PayPal Gateway - 2013 Guía de usuario Pagina 58