sumana,
We do not want the user to be allowed to add a non-priced material to a sales order.
For all these materials create a different Item category group, and put this new item cat. gr. in (MM03, Tab Sales:sales org2) MVKE-MTPOS.
In VOV4, item category determination do not maintain any records with this item category group.
By this user can not create sales orders for these materials.