Display Function

For Display PR

call function 'ME_DISPLAY_OBJECT_RQ'
        exporting
          key           = banfn.

For Display PO

call function 'ME_DISPLAY_PURCHASE_DOCUMENT'
            exporting
              i_ebeln                    = it_final-ebeln
              i_ebelp                    = it_final-ebelp
           exceptions
             not_found                  = 1
             no_authority               = 2
             invalid_call               = 3
             preview_not_possible       = 4
                    .

For Display Material Document

CALL FUNCTION 'MIGO_DIALOG'
EXPORTING
i_action            = 'A04'
i_refdoc            = 'R02'
i_notree            = 'X'
i_skip_first_screen = 'X'
i_okcode            = 'OK_GO'
i_mblnr             = belnr
i_mjahr             = gjahr
EXCEPTIONS
illegal_combination = 0
OTHERS              = 0.

For Display MIRO(invoice) Document

call function 'MRM_INVOICE_DISPLAY'
         exporting
           i_belnr              = it_final-lfbnr
          i_gjahr              =  it_final-gjahr
         changing
           return               = return
                 .

For Display FI (Accouting) Document

call function 'AC_DOCUMENT_RECORD'
   exporting
     i_awtyp           = bkpf-awtyp
     i_awref           = bkpf-awkey+00(10)
     i_aworg           = bkpf-awkey+10(10)
    i_awsys            = bkpf-awsys
*   i_awtyp_incl       = 'BKPF'
    i_awtyp_excl       = ' '
    i_bukrs            = bukrs
    i_valutyp          = '0'
    x_dialog           = 'X'.