Sales Invoice

Dear All,

We are doing invoicing through axapt.

Consumption for this invoice is from FG ware house, In this warehouse we won’t keep any stock, How much is requoired that much only we will keep.Stock to this fg warehouse is done through production order. But we dont want to end the production order(Also dont want do costing). So in sale order packing slip is getting posted, But while Invoicing, I am getting Error saying That

COST AMOUNT IS KNOWN OJNLY FOR ZERO IN STOCK

If i maintain Extra stock i am not getting any error… Can you find a way for this…

Thanks in advance