How to get the Net value in SD Bex query

Dear All,

We have a  key figure called Net Value in SD query 0SD_C03_.  But in validating data with ERP system to this bex the value is not matching.

In this Query we are maintain sales doc category -C and Item category.

Because the  Net value is depends on all the above mentioned condition.Please let me know the solution to validated the data with ERP to above Bex query.

Please let me know the possible t codes in ERP to validate  the  above query.

Thanks

Regards,

Sai