How to retreive and display output list from BAPI

Hello
I am making an applcation using SUP 2.0, and this application make an user to get leave history using a Mobile System from SUP.
I've created the MBO as Attributes using the BAPI: BAPI_LEAVE_HISTORY.
This BAPI has some parameters IN and OUT.
Input parameters are Employee Id and date.
The parameter OUT is a List that retreives the employee leave history.
Anyone has an Idea or example how to retreive the output from BAPI and displaying the output on a screen.
Any tips or blogs that can help me?
Thanks all!
Satish

Hi David Brandow,
I have tried your solution where I just created a MBO for my 'operation' and I'm using sync parameters to execute the RFC.
The problem I'm facing is, for example, if I create a record it gets saved in the MBO table and the record successfully gets created in SAP as well after a sync. But when I create another record and sync, the previously saved record in MBO table also gets executed so I'm getting duplicate entries in SAP.
Have you or anyone faced this problem?
Any response is appreciated. Please let me know if I'm not clear, I realized its a complicated scenario.
Thanks,
Sandeep

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    Hi David Brandow,
    I have tried your solution where I just created a MBO for my 'operation' and I'm using sync parameters to execute the RFC.
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    check the program,
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    data: end of gt_sflight.
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    data: g_all type c value SPACE.
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      method handle_data_changed.
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      endmethod.
    endclass.
    data: event_receiver type ref to lcl_event_receiver.
    end-of-selection.
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          text
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      set pf-status 'BASIC'.
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      if g_docking is initial.
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      endif.
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    *&      Module  USER_COMMAND_0100  INPUT
          text
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      save_ok_code = ok_code.
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                 it_fieldcatalog = gt_fieldcat.
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          call method cl_gui_cfw=>flush.
        when 'RESTART'.
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    using the changed fieldcatalog.
          perform restart_sflight.
        when '&ALL'.
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      endcase.
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    *&      Form  CREATE_AND_INIT_CONTROLS
          text
    -->  p1        text
    <--  p2        text
    form create_and_init_controls.
      create object g_docking
          exporting
               dynnr = '100'
               extension = 150
               side = cl_gui_docking_container=>dock_at_bottom.
      create object g_alv
          exporting
               i_parent = g_docking.
      create object g_custom_container
          exporting
               container_name = 'CC_0100_FIELDCAT'.
      create object g_editable_alv
          exporting
               i_parent = g_custom_container.
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      create object event_receiver.
      set handler event_receiver->handle_data_changed for g_editable_alv.
      call method g_editable_alv->register_edit_event
                    exporting
                       i_event_id = cl_gui_alv_grid=>mc_evt_modified.
      perform build_fieldcatalogs changing gt_fieldcat gt_fcatfcat.
      perform modify_fieldcatalog changing gt_fcatfcat.
      perform select_data.                 "CHANGING gt_sflight
      call method g_alv->set_table_for_first_display
              changing
                   it_outtab       = gt_sflight[]
                   it_fieldcatalog = gt_fieldcat[].
    optimize column width of grid displaying fieldcatalog
      gs_fcatlayo-cwidth_opt = 'X'.
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    modified it after passing.
      call method g_alv->get_frontend_fieldcatalog
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      call method cl_gui_cfw=>flush.
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      call method g_editable_alv->set_table_for_first_display
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                   is_layout       = gs_fcatlayo
              changing
                   it_outtab       = gt_fieldcat[]
                   it_fieldcatalog = gt_fcatfcat[].
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      create object event_receiver.
      set handler event_receiver->handle_data_changed for g_editable_alv.
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    *&      Form  restart_sflight
          text
    -->  p1        text
    <--  p2        text
    form restart_sflight.
      data: ls_fieldcat type lvc_s_fcat.
    free g_docking and thus g_alv
      call method g_docking->free.
      clear g_docking.
      clear g_alv.
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      create object g_docking
          exporting
               dynnr = '100'
               extension = 150
               side = cl_gui_docking_container=>dock_at_bottom.
      create object g_alv
          exporting
               i_parent = g_docking.
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      loop at gt_fieldcat into ls_fieldcat.
        clear ls_fieldcat-tech_comp.
        modify gt_fieldcat from ls_fieldcat.
      endloop.
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      call method g_alv->set_table_for_first_display
              changing
                   it_outtab       = gt_sflight[]
                   it_fieldcatalog = gt_fieldcat.
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      call method g_alv->get_frontend_fieldcatalog
              importing
                   et_fieldcatalog = gt_fieldcat[].
      call method g_editable_alv->refresh_table_display.
      call method cl_gui_cfw=>flush.
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          text
    -->  p1        text
    <--  p2        text
    form select_data.
      data: lt_sflight type table of sflight with header line,
            ls_scarr type scarr.
    select data of sflight
      select * from sflight into table lt_sflight up to g_max rows.
    copy data to gt_sflight and update CARRNAME
      loop at lt_sflight.
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        select single * from scarr into ls_scarr
           where carrid = gt_sflight-carrid.
        gt_sflight-carrname = ls_scarr-carrname.
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      endloop.
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          text
         <--P_GT_FIELDCAT  text
         <--P_GT_FCATFCAT  text
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      data: ls_fcat     type lvc_s_fcat.
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      call function 'LVC_FIELDCATALOG_MERGE'
          exporting
               i_structure_name       = 'SFLIGHT'
            I_CLIENT_NEVER_DISPLAY = 'X'
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                ct_fieldcat            = p_fieldcat[]
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            PROGRAM_ERROR          = 2
            OTHERS                 = 3
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        if ls_fcat-fieldname ne 'MANDT'.
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          if ls_fcat-fieldname = 'CARRID'.
            ls_fcat-txt_field = 'CARRNAME'."link CARRNAME to CARRID
          endif.
          modify p_fieldcat from ls_fcat.
        endif.
      endloop.
    create a new line for CARRNAME in p_fieldcat
      clear ls_fcat.
      ls_fcat-fieldname = 'CARRNAME'.
      ls_fcat-ref_table = 'SCARR'.
      ls_fcat-col_pos = 1.
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    This fieldcatalog is used to display fieldcatalog 'p_fieldcat'
    on the top of the screen.
      call function 'LVC_FIELDCATALOG_MERGE'
          exporting
               i_structure_name       = 'LVC_S_FCAT'
            I_CLIENT_NEVER_DISPLAY = 'X'
           changing
                ct_fieldcat            = p_fcatfcat[]
       EXCEPTIONS
            INCONSISTENT_INTERFACE = 1
            PROGRAM_ERROR          = 2
            OTHERS                 = 3
      if sy-subrc <> 0.
    MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
            WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
      endif.
    Hide all fields that are not documented (valid for release 4.6A)
      perform hide_fields changing p_fcatfcat.
    endform.                               " BUILD_FIELDCATALOGS
    *&      Module  EXIT_PROGRAM  INPUT
          text
    module exit_program input.
      leave program.
    endmodule.                             " EXIT_PROGRAM  INPUT
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          text
         <--P_GT_FCATFCAT  text
    form modify_fieldcatalog changing p_fcatfcat type lvc_t_fcat.
      data ls_fcat type lvc_s_fcat.
      loop at p_fcatfcat into ls_fcat.
        ls_fcat-coltext = ls_fcat-fieldname.
        ls_fcat-edit = 'X'.
        if ls_fcat-fieldname = 'COL_POS' or ls_fcat-fieldname = 'FIELDNAME'.
          ls_fcat-key = 'X'.
        endif.
        modify p_fcatfcat from ls_fcat.
      endloop.
    endform.                               " MODIFY_FIELDCATALOG
    form hide_fields changing p_fieldcat type lvc_t_fcat.
      data: ls_fcat type lvc_s_fcat.
    Only show documented fields of fieldcatalog.
    For a documentation choose "Help->Application Help" in the menu.
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        or   ls_fcat-fieldname eq 'COL_POS'
        or   ls_fcat-fieldname eq 'COLDDICTXT'
        or   ls_fcat-fieldname eq 'COLTEXT'
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        or   ls_fcat-fieldname eq 'DECIMALS_O'
        or   ls_fcat-fieldname eq 'DECMLFIELD'
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        or   ls_fcat-fieldname eq 'DRAGDROPID'
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        or   ls_fcat-fieldname eq 'HOTSPOT'
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