Inventoried Products: A product that is typically warehoused and goes through a shipping/invoicing process. These products include books, shirts, standards, and other intellectual property.
Non-Inventoried Products: A product that is considered perpetual, and will always be available for sale. Optionally, non-inventoried products can have a warehouse. When a warehouse is identified for a non-inventoried product, then packing slips will be printed for these products so the product can be fulfilled. Shipping is never charged for non-inventoried product unless the product has a shipping charge defined to override and charge a specific amount. This is common for the setup of items that are manufactured onsite.