product costing

Dear Expert,

we are working on production order costing.

we are purchasing RAW material with Batch, every Batch is having different rate.

the same RAW material is using for production.

now, when we are creating production order (T.Code CO01) and selecting perticular Batch of Raw material in component. doing COST ORDER & Release order.

and when we checking COST analysis it show the MAP of RAW material.

but we have purchased that RAW material with different price.

pleas eguide.

Ajay