https://www.roseasp.com/hosted-dynamics/microsoft-dynamics-hosted-great-plains/ Adding Inventory Items in Dynamics GP. This is a quick video that shows you how easy it is to add items to your inventory masterfile in Dynamics GP. The inventory control module in Dynamics GP allows you store a lot of information about your inventory items and is well integrated with the rest of the system, including sales orders, purchase orders, and general ledger.