Valuation class in materiel master data

Hi experts,

Is there any customizing method in SAP in order to substitute automatically valuation class while choosing a materiel group in MM01 ( as we have only 1 to 1 relation between materiel group and valuation class, we prefer the system to determine automatically valuation class while entring materiel group in the view "BASIC DATA 1".

Thanks for your help in advance.

Regards,