Cost details not displayed

Hi

I have defined three Value Categories (Spares, Internal Labour and External Services) and assigned respective Cost elements to them. All the above Value Categories are assigned with respective Maintenance Cost Key Figures.

When I do process using IW31, Planned Cost is not coming for all the three categories. After consuming the Material (against PO / Reservation), actual cost is appearing against Spares.

Even after running IW41, cost is not appearing for Internal labour (Actual and Planned).

Is any other Config setting to be done from PM side.

Thnx in advance and Plz guide.

Sam