A method aligns a crimping cassette crimping tool in a cable processing apparatus having a tensioning device for applying tension to a mounting part relative to a crimping device attachment surface. The crimping cassette includes the crimping tool having cooperating stationary and movable tool parts for crimping and a holding device that attaches to the mounting part fixed to the stationary tool part and has a position allowing a spatially-limited adjustment movement of the stationary tool part. The method includes releasing the tensioning device; inserting the stationary tool part into a tensioning device area; moving the moveable tool part towards the stationary tool part slightly before it touches the stationary tool part; moving the moveable tool part towards the stationary tool part until a pressing force between the tool parts is reached or exceeded and an alignment occurs between the tool parts; and applying tension with the tensioning device.