Error when posting Assembly Consumption with no stock

delaghetto

We create a Sales Order that has a BOM Item.

There is one assembly Item in this BOM that has no stock.

When we try to post the Sales Order, it gives an error like "not enough quantity of this product in stock"

¿Do we need to modify the NAV code to remove this validation or is there a configuration?

The thing is that this company sells some services that have been created like BOM Items. There are some materials that need to be purchased in order to do this service, and are purchased after posting the order.