When you try to delete a Placement you see the following message that the action can't be performed.
Carerix doesn't allow to delete Placements
(except if the placements have the status "Pending")
Carerix sees a Placement, when it doesn't have the status 'Pending', as a formal agreement between the client, the candidate and the company.
You can't just see such an agreement as "non existent". That is why Carerix doesn't allow you to delete placements.
However, the Administrator can delete Placements (no matter the status).