Hi there,

I have a situation and couldnt figure out the solution. At our company, we sell products which include raw materials (defined as BOMs-kits). All materials have FIFO and automated as Costing method and Inventory Valuation respectively. Last week, we sold some products and the raw materials ran out so we had to create some back orders (the inventory for those products became negative). We then purchased some more materials and brought the inventory back to positive. 

Now when we click on Inventory Valuation (under Inventory), Odoo complains that cost of the product is 0 and would not show the valuation. Please help.