If you have reason to think that the Quantity on Hand (QOH) for inventory items, lot or serial numbers may be incorrect, you can run reports and audit an item's transactions to be sure that the QOH is correct. To ensure that the filters are not blocking information, run the reports from the Report Menu rather than using a memorized report.
Run the Inventory Valuation Detail report for All Dates
This report shows you all of the transactions for all of the Active inventory items. If you have any questions about your inventory, this report will have all of the answers. But you must run the report for All Dates.
Run the Inventory Item QuickReport for a single item
This report shows you all of the transactions for the selected inventory item. It also shows you Sales Orders and Purchase Orders so you can how many items are due in and due out.
Both of these reports show you the QOH for the selected inventory items, and the QOH on these reports should match the QOH on the Item List.