PayPal Gateway - 2012 Guide de l'utilisateur télécharger pdf (Page 69)

Gateway Developer Guide and Reference 31 July 2012 69

Submitting Credit Card Transactions

Submitting Sale Transactions

You can send shipping and billing information to be stored, but you must not include the AMT

field. If you pass a value for AMT, you will receive an error with RESULT=4 and

RESPMSG=Invalid Amount.

NOTE: PayPal does not verify the credit card data, as it is not sent to the banks for processing.

To validate a transaction, you must submit an account verification, also known as a

zero dollar authorization (TRXTYPE=A). For details, see “Submitting Account

Verifications” on page 54.

Submitting Sale Transactions

The sale transaction (TRXTYPE=S) charges the specified amount against the account, and

marks the transaction for immediate fund transfer during the next settlement period. PayPal

submits each merchant’s transactions for settlement on a daily basis.

NOTE: PayPal Payments Advanced and Payflow Link users cannot submit sale transactions

unless they obtain the Payflow SDK.

When To Use a Sale Transaction

A sale transaction is best suited to businesses that provide immediate fulfillment for their

products or services. If your business does not provide immediate fulfillment, credit card

association rules recommend that you use an authorization and a delayed capture transaction.

For details, see “Submitting Authorization/Delayed Capture Transactions” on page 55. To

recharge a credit card when you are not storing the credit card information in your local

database, you can perform a new reference transaction based on a Sale transaction.

Additional Parameters For Sale Transactions

To perform a sale transaction, pass the following parameters:

 ACCT

 AMT

 EXPDATE

NOTE: The pinless debit tender type requires essentially the same parameters as a credit card

transaction. In addition to the values required by all transactions, pass values for the

ACCT and AMT parameters. The First Data Merchant Services (FDMS) South

processing platform supports sale and credit transactions only.

Typical Sale Transaction Parameter String

The following is a typical NVP string passed in a sale transaction.

1 2 ... 64 65 66 67 68 69 70 71 72 73 74 ... 229 230

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PayPal Gateway - 2012 Guide de l'utilisateur Page 69