How to re evaluate Material Price through MRNB

Dear All,

Any body explain me configuration setting for material price should be correct as well as MRNB is execute.

We are in ECC 6.0 and would like to use the revaluation functionality provided by SAP using transaction MRNB.

MRNB provides the option of revaluating goods receipts for a particular period in case the purchase order price is changed. The following accounting entries are posted on execution :

Vendor Account - Debit/Credit

Expense/Revenue Account - Debit/Credit

We have a business need to correct  the material price instead of the Expense/Revenue Account,which means that the Moving average price should be impacted like done in the case of a price difference scenario in MRNB.

Thanks & Regards

K C Sharma