i have a "buyable only" product A that is used in bill of material of a "manufacture and saleable" only product B.

i raised a purcahsed order for product A but i cant receive the product, i get the following error "

"Error! Please define inventory valuation account on the product category: "All products" (id: 1)"

There is no any product valuation account in the prodcut form, my valuation is set to realtime, i have tried the following.

Stock input: Expense Account/ also checked Asset Account

Stock Input : Expense Account

Stock Expense : Expense Account.

kindly quide me, also keep in mind this product A is only used in manufacturing of product B, also during manufacturing the volume of product changes.