
Processors Requiring Additional Transaction Parameters
PayPal Credit Card Transaction Request Parameters
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128 07 January 2014 Gateway Developer Guide and Reference
PayPal Credit Card Transaction Request Parameters
In addition to the core credit card parameters, PayPal accepts the parameters described below.
Parameter Description
AMT (Required) Amount (US Dollars) U.S. based currency.
AMT=ITEMAMT + TAXAMT + FREIGHTAMT + HANDLINGAMT + INSURANCEAMT
- DISCOUNT
NOTE: You must set CURRENCY to one of the three-character currency codes for any
of the supported PayPal currencies. See
CURRENCY in this table for details.
Limitations: Must not exceed $10,000 USD in any currency. Nine numeric characters
plus decimal (.) character. No currency symbol. Specify the exact amount to the cent
using a decimal point—use 34.00, not 34. Do not include comma separators—use
1199.95 not 1,199.95.
Nine numeric characters plus decimal.
CURRENCY (Required) The currency code.
NOTE: CURRENCY is applicable only to processors that support transaction-level
currency.
The PayPal acquirer allows PayPal Payments Advanced and PayPal Payments Pro
merchants to run transactions using any of the following six currencies with a single
account.
AUD - Australian dollar
CAD - Canadian dollar
EUR - Euro
GBP - British pound
JPY - Japanese Yen
USD - US dollar
Limitations: Three characters.
BUTTONSOURCE (Optional) Identification code for use by third-party applications to identify
transactions.
Limitations: 32 alphanumeric characters.
CUSTIP (Optional) IP address of payer’s browser as recorded in its HTTP request to your
website. This value is optional but recommended.
NOTE: PayPal records this IP address as a means to detect possible fraud.
Limitations: 15-character string in dotted quad format: xxx.xxx.xxx.xxx
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