SAP Message VH794 - Pricing element &1 (&2) cannot be used

Diagnosis
There are no predefined settings for pricing element &V1& (&V2&) forpricing. You make this setting in the following activity:Identify Predefined Pricing Elements in Pricing.
You therefore cannot use this pricing element for simplified pricemaintenance in sales documents.

Procedure
You must assign the pricing element either a condition type or one ofthe subtotal fields 1 to 6, A or B.