Packing cost in production cost
My client is producing metal coated coil and from coil the produce roofing sheets. Products produce in every intermediate stage are saleable. They want to include the packing in production cost but they do packing only if that product go for sales otherwise same product they send for the next process without packing. They want packing cost in the production cost if the product goes for sale otherwise(if it is go for next process) production cost exclude packing cost. Can you please tell me how it can be done? How BOM and routing can be used in production order?