if i do that , I get below error message
Production order with an actual activity update.
Message no. KA465
Diagnosis
In the plan, activity updates are relevant to price determination. The system uses a multi-level price determination in actual costing. In actual costing, the system already debited materials and credited the cost centers, and vice versa.
System Response
The system does not execute revaluation, to avoid posting the credits and debits twice.