Delete a cost
Go to the Projects page and find the deliverable that contains the cost you want to delete.
Click the deliverable’s button to open the Calculation form.
Find the cost that you want to delete and click its button.
This will open the configuration form for the cost.
Click Delete and the cost will be deleted from the deliverable.
If the Delete button is not displayed it might be because a purchase invoice is associated with this cost, or the cost is an expense and has been invoiced, in which case it cannot be deleted.