By default, Microsoft Dynamics NAV 2015 is set up so that you are allowed to post sales invoices that contain items that you currently do not have on stock.
You can change that behavior to allow posting an invoice only if all the items on the lines are on stock. In this scenario, you will learn how to do it through the Inventory Setup page.
- On the Role Center, o the Home tab, in the Setup group, choose Setup.
- On the drop-down menu, choose Inventory Setup. The Inventory Setup window opens.
- In the Inventory Setup window, select the Prevent Negative Inventory check box.
- Choose the OK button..