SAP Message WV198 - Calculation schema &1 for appl. &2 does not contain an effective price

Diagnosis
Calculation schema &V1& for application &V2& does not contain an entryfor the effective price (subtotal S). This entry is necessary to enablean entry to be made in the net/net purchase price field (list fieldEKPNN) in the price calculation.

System Response
Prices could not be calculated for the current item.

Procedure
Compare schema &V1& in this client with the schema provided with thestandard system (&V3&) in client 000 and supply the missing entry inprice determination (Purchasing or Sales) inMaintain calculation schema (Sales).