CallBase ® Computer Managed Information Product Inventory Window The Inventory module is the heart of the order fulfillment portion of the CallBase product. All elements of the product setup are done in the Inventory. Product type codes and multiple keyword relationships are established. As is the sale price. Kits and Kit components can also be set up from here. The Receiving module can be accessed from here and it handles incoming shipments to the warehouse. Thereby adjusting the quantity on hand.