Code: Alles auswählen.
DATA:
    ls_header      TYPE MEPOHEADER,
    lt_partners     TYPE MMPUR_PARTNER_ALL_TAB,
    ls_partner      LIKE LINE OF lt_partners,
    lo_po_doc     TYPE REF TO IF_PURCHASING_DOCUMENT.
  ls_header = im_header->get_data( ).
  lo_po_doc ?= im_header.
  lt_partners = lo_po_doc->get_partners( ).
  LOOP AT lt_partners INTO ls_partner.
    BREAK-POINT.
  ENDLOOP.