WIP/FG Valuation steps verification

pashya1972

Hi

I wud like to verify the valuation steps of FG and WIP of an item.
1.Costing method is = wtd average
2.different stages of WIP r defined as Work centres and on routing lines rates are defined for each stages.
3.Now in case of WIP logically the valuation shd be RM+Routing rate and for FG RM+total cost of work centre routing .
4.I m finding it very difficult to cross verify the rates of FG/WIP whether it is correctly going.
5.Also wud like what will be effect of positive/negative entries? .
6.Valuation steps/accounting entries


Thanx in advance

Pash