Field Service added a feature for Use of product out of Stock setting.

This provides the option of a warning or error for the user when adding a Work Order Product.

For environments where the inventory levels are not actively managed it would be useful to have a 3rd option to completely disable the messages to avoid the annoyance of users having a message whenever they add a Work Order Product for an Inventory type Product if the Product Inventory levels are not maintained in D365 Field Service.