Production Order - Activity Cost not updated..

Hello All...

Please Help

At the time Production Order Activity Confirmation(CO11N) Qty and activity/cost center,Cost element is updated in Production order Cost Report no cost is booked.

from my end I checked the below settinigs:

1 Cost Elements in Activity Masters (Categeory - 43)

2 KP26 (Cost Center Vs Activity Type ) Rate Maintained

3 Work Center - Cost Center and Activity Assigned

4 Routing - Costing Relevency "X" is maintained

5 Controll Key - Cost is selected

6 Work Center Forumula - Allowed for Calculation is selected

7 Valuation Variant - Activty Source Price is maintained

8 Assigned in Costing Varaint

9 Order type we assigned - Costing Variant

10 CO13 - Confirmation Cancellation

if I missed any thing other than the above mentioned settings plz suggest...