If you want to use different valuation strategies or different overhead for costing in plants belonging to the same company code, you can assign the valuation variant to the plants in Customizing for Product Cost Controlling. This can be used for group costing, for example.
It is only necessary to check the valuation variants if they apply to a single plant.
If you want to use single-plant valuation variants, you must check the valuation variants in respect of the following:
Further information about valuation variants can be found in the Implementation Guide for Product Cost Controlling and in the documentation for Product Cost Planning in the R/3 Library.