Diagnosis
The same KEPH fields are assigned to cost components &v2& and &v3& incost component structure &v1&. Cost fields for the KEPH file areassigned inernally when you define cost components in customizing. Thiscan lead to problems when displaying or costing without errors.

Procedure
Go into Customizing and create cost components &V2& and &V3& again incost component structure &V1&.