Deleting Purchase Order

 I would like to know if its posible to delete a purchase order. I know that it is posible to change, cancel and block an order, but it is posible to delete the entire order, and not just all items

  In SAP only is possible flag for deletion the items of the purchase order (PO/Change/Edit/Delete) . After it, you need to run an ABAP program designed by SAP in order to delete finally the PO and its items.

FI documents could be deleted directly. LO could be archived (mm-'me98',sd - 'vara')