@Anonymous appreciate your response, I have turned on the inventory tracking, created the Purchase Order and converted into Bill after that, then I found only Qty on hand updated as per Purchase Order, there is no amount under Cost still, should I manually add to each item or the result because I have missed any procedure? Should I leave the Cost as blank, and the system will still calculate the costs under the relevant chart of accounts? 

And where we can view the current average cost on each items in the system? Thanks Rita