When I create a sales order and then convert to an invoice, the stock inventory is handled correctly. The quantity in demand increases when the sales order is made, then when the sales order is converted to an invoice, the quantity in demand is reduced, and then the quantity in stock is reduced as well. This is normal, and I understand.

However, when I just want to create an invoice (without a sales order) the quantity in stock is reduced (this is correct) but then the quantity in demand becomes minus.

What happens now? Do I have to go and manually change the quantity in demand back to zero? Does my team have to remember that every time they create a stand-alone invoice, they have to adjust inventory manually? This seems very strange- so perhaps I am not understanding correctly. Please advise the best practice here.