Integration Guide

The PayPal Shopping Cart – Add to Cart and View Cart Buttons
Creating Advanced PayPal Shopping Cart Buttons on the PayPal Website
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212 September 2008 Website Payments Standard Integration Guide
– By Option – Select this radio button if want to track inventory by product options that
you specified during “Step 1 – Specifying Basic Features of Your Add to Cart Button”
on page 207. If you set up product options with prices, the radio button is selected
automatically.
For each option listed, enter a unique item ID, the quantity that you currently have in
stock, and an alert level. PayPal sends you an alert by email when your inventory on
hand for any option falls to or below its alert level.
Under the Can customers buy an item when it is sold out? heading, do one of the
following:
– Yes – Select this radio button to let buyers checkout and authorize their payments, even
when inventory tracking shows that your item would become oversold. Buyers are not
informed of oversold or out-of-stock situations nor that their items will be on back order
after they complete their transactions.
– No – Select this radio button to prevent buyers from checking out and authorizing their
payments when inventory tracking shows that your item would become oversold. In the