If your items are in the Part module, but they are not showing up in the Inventory module, the part may not have any inventory in stock, or it may be a non-inventory type item. To show items that are not in stock, use the Advanced Search.
To add inventory for a part that does not currently have inventory, click the Add button or the Cycle button in the module toolbar of the Inventory module. A wizard will be displayed to take you through the process of adding inventory. See Add inventory and Cycle count for more information.