Overdue Orders Waiting On PO Report

The Overdue Orders Waiting On PO report lists overdue orders whose items are not yet on a purchase order, so you can chase the purchasing needed to fulfill them.

Open it from Income -> Reports -> Orders -> Overdue Orders Waiting On PO. A non-stock-only variant is available at Income -> Reports -> Orders -> Non-Stock Overdue Orders Waiting On PO.

Run the report to see overdue orders still needing a PO for their items.