No valid BOM could be found

Question

After costing i have got some errors for some of the materials..
FOr a material A, the error is No valid BOM could be found for material B( here B is a component of A).
Like this for many materials,many errors..
Some of the materials are with HALb and some are ROH...
If its only halb,THen i could get a reason... but it s having ROH also..
Please help me out in understanding..

Answer 1

Hi,
You are running the cost estimate of a finished product which finally comes out based on some raw materials and semi finished goods from a Production Order.  This cost estimate is linked to a costing sheet which calculates the raw material consumed
for production and its production cost.  These costs are settled through the cost component structure OKTZ.  Each of the
production order is linked to Bill of Materials that is all those materials which are required for production and the production
process operations are defined in Routing.  Each of these production orders carries a costing variant planned and costing variant actual to calculate the cost.  The costing variant has its own attributes like valuation variant, date control etc.  The valuation variant defines in what sequence the material has to be valuated and the costing sheet is assigned to this valuation variant for the plant.
Further, BOM usage and routing are assigned in the valuation variant.
The valuation variant checks the materials during your costing run, to take the price and whether it is one of the component in
the bill of materials for the production order.  Hence during costing run if the materials is not one of the component in BOM, it cannot
run the cost estimate properly.
Best Regards,
Sadashivan