Deleting order costs
If an order is canceled, the costs associated with the order are no longer valid and can be deleted.
Deleting order costs is only possible for orders of the work orders type. For reservations there is no option of deleting the costs upon cancellation.
* 
If a cost line of an order line is deleted, the budget used for the work order is recalculated and the amount is credited back to the budget.
Prerequisite
In Field definer > Business object settings > Costs, the setting Remove order cost on cancellation must be set to Yes.
Procedure
1. Select a work order with order lines. For example, a catering order with order lines.
2. On the action menu, click Include order line(s) in actual costs. You can see the total costs of the order.
3. Set the order to the Accepted status.
4. Click Canceled, if the order needs to be canceled.
5. A message appears asking if you want the order costs to be deleted for the canceled order.
6. Click Yes to delete the order costs.