User's Manual

IPN and PDT Variables
Advanced and Custom Information
B
148 May, 2005 Merchant User Manual and Integration Guide
Advanced and Custom Information
Shopping Cart Information
TABLE B.2 IPN and PDT Variables: Advanced and Custom Information
Variable Name Possible Values Description
Character
Length
invoice Pass-through variable you can use to identify your Invoice
Number for this purchase. If omittted, no variable will be passed
back to you.
127
custom Custom value as passed by you, the merchant. These are pass-
through variables that are never presented to your customer
255
memo Memo as entered by your customer in PayPal Website Payments
note field.
255
tax Amount of tax charged on payment.
If this is a Shopping Cart transaction, to the following Shopping
Cart Information section for more information.
option_
name1
Option 1 name as requested by you.
If this is a Shopping Cart transaction, please to the following
Shopping Cart Information section for more information.
64
option_
selection1
Option 1 choice as entered by your customer.
If this is a Shopping Cart transaction, please to the following
Shopping Cart Information section for more information.
200
option_name
2
Option 2 name as requested by you.
If this is a Shopping Cart transaction, please to the following
Shopping Cart Information section for more information.
option_
selection2
Option 2 choice as entered by your customer.
If this is a Shopping Cart transaction, see
Table B.3, “IPN and
PDT Variables: Shopping Cart Information” on page 148
for more information.
T
ABLE B.3 IPN and PDT Variables: Shopping Cart Information
Variable Name Possible Values Description
num_cart_
items
If this is a PayPal Shopping Cart transaction, number of items in cart.