To prevent shoppers from adding more than the available pre-order inventory to cart:
- Go to the Default Settings tab
- Check the box Prevent Customers from Ordering More than the Pre-order Stock Available in the Stock Warning section
- Click save
- This feature applies only to pre-order settings using Inventory Management Setting #1 or the Specific Pre-order Stock feature
- This feature only stops shoppers on product pages from adding more than the available pre-order inventory to cart. It cannot prevent shoppers on the cart page from increasing the item quantity.