r_alv->refresh_table_display( ). Programm Fehler

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IF 1022_go_cont IS NOT BOUND.

    CREATE OBJECT 1022_go_cont
      EXPORTING
        container_name    = 'CONT_1022'
      EXCEPTIONS
        cntl_error        = 1
        cntl_system_error = 2.

    IF sy-subrc <> 0.
            " do error handling here
    ENDIF.


    CREATE OBJECT 1022_go_alv
      EXPORTING
        i_parent          = 1022_go_cont
      EXCEPTIONS
        error_cntl_create = 1.

    IF sy-subrc <> 0.
      " do error handling here
    ENDIF.

    1022_go_alv->set_table_for_first_display(
      CHANGING
        it_outtab                     = lt_itab
        it_fieldcatalog               = 1022_gt_fcat
      EXCEPTIONS
        invalid_parameter_combination = 1
        program_error                 = 2
        ).

    IF sy-subrc <> 0.
      " do error handling here
    ENDIF.

  ELSE.

    1022_go_alv->refresh_table_display( ).

  ENDIF.