Query Regarding Rework Order

Hi PP Guru,

I have one scenarion wherein I need your help...

Scenario:

My Client is creating a Rework Production Order wherein he wish to replace one component of a BOM with Other. However the component removed for the Header Material should increase my Inventory.

Example: Suppose I have a Header material 'A' in a BOM. Components are 'B' and 'C' are required for producing 'A' . Since there is shortage of component 'C', they want it to replace by component 'D'. After creating Rework Order and confirmation, the Stock of 'C' should increase by the no. it was removed from the Header Material. Now the Costing of Production Order should have cost of 'B' and 'D' in it with all the relevant activities.

I have tried options like giving the Quantity of 'C' in minus so it becomes By-product and goes to unrestricted use via movement type '531' increasing my stock as required. But in costing the price for 'C' is in Minus and it is adjusted with the prices of other components (minus plus mathematics) and gives the cost. in this example minus value of 'C' is adjusted against combined value of 'A' and 'D'. (Price of A + price of D) -Price of 'C' which i dont want.

I want Price of 'C' also to be replaced by price of 'D' and Stock of 'C' gets updated in the inventory.

can you please help me in getting the correct process in place. Thanks.