Negative Inventory report

Run the Inventory Valuation Detail (IVD) report 

Select Reports>Inventory>Inventory Valuation Detail.
Click the Dates drop-down and select All.
Find all occurrences of negative amounts in the On Hand column.

Ideally, I would like a report to show only the items that we are currently negative in. 

Basically, I want a report for the items that we should get a pop-up message for saying that we are currently overdrawn on that item, especially as those pop-ups are only intermittently working for us. 

 We have thousands of individual items in our inventory list, so digging through a full list to find the few that will show up on an order is not going to be a workable solution for us.  Even limiting it to just the possible items available to this particular customer leaves several hundred to dig through.

Open your Inventory Center and in blue there is an option that says Negative Inventory Listing. This will show you all your negative items.

Hope this helps.