First, create a custom attribute for your Unique Product Lookup with Text Type, and check the box Unique Values Only.
Here you may change the Product Lookup Field from SKU to your unique product lookup attribute.
Add your Products to the Quick Order Form
Only products that have a value set for this unique product lookup attribute can be saved and displayed to the customer. For Configurable and Bundle products, only the parent product needs to have a value.
Updated about 1 month ago