In STO where can i see the Mvt type 647/641 (for 1/2 steps)???
In addition to whats mentioned by Pankaj, you can find that information in the delivery. You can go to the relevant delivery (VL03N) and on the item level detail, you need to go to 'administration' tab where the movement type will be displayed. You may use SE16 and look for LIPS-BWART to verify the movement.
From an SD configuration perspective, this movement type is configured in the sales item category which in turn is assigned to the delivery time.