TRUMPF punching: Scratch-free punching and forming - How the active die works

Further information:
www.trumpf.com...
www.trumpf.com...
The video shows how the active die works. It makes possible scratch-free punching and forming since it offers all the advantages of the descending die. In addition, the active die can execute an active forming stroke from below, functioning much like a second punching head. This paves the way for new forming sizes and depths.

[@SS-gj4dt]

Can anyone tell me what could cause scratches if they are happening?