Mixed Costing on two different Costing Variants at the same time.

Dear All,

I have already configured mixed costing on my Costing variant PPC1, now i need to configure the same on another costing variant ZPSM, i have done all the setting for Costing type, Valuation variant and costing versions for mixed costing for the later costing variant, and maintained the mixing ratios for the product, but the system is not taking into account the mixed costing for the later variant.

Can anybody help me out on this? or is it not possible to do mixed costing for two costing variants at the same time?

Regards

Rashid