Dear Juan
Now since you have planned your material in order, you can consume this planned material withdrawal thru IW41 during time confirmation(Also thru MIGO, Mvt type 261). Once you do this posting, goods movement will occur out of your storage location and will be consumed to order. This will lead to actual cost on your order.
Folllow below steps:
1* Material planned in order thru IW3K
2* Material withdrawal thru IW41, Goods movement tab on left corner of the page.
Save and check your costs in Order Cost tab page. You will find actual cost reflected and stock in your storage location reduced due to this consumption.
Hope your issue is resolved. Award points if useful.
Thanks
Murad