FM Dump issue

Question

Hi,
Could any post solution for the given below errors.
1)while executing an alv report I'm getting dump "PERFORM_PARAMETER_MISSING".when I've debugged the program I could able to know that it's because of parameter IT_events to which an internal table has been passed.
But data has been populated to IT_events Internal table properly which is  my result of debugging.
2)Also I've implemetd logic forcalling a transaction from the o/p by event user_command but the transaction is not getting called.
thanks
Natasha.

Answer 1

CALL FUNCTION 'REUSE_ALV_LIST_DISPLAY'
    EXPORTING
      i_callback_program       = gdf_repid
      i_callback_pf_status_set = 'TOOLBAR'
      i_callback_user_command  = 'UCOMMAND'
      is_layout                = gds_layout
      it_fieldcat              = gdt_fieldcat
     it_events                = gdt_events
    TABLES
      t_outtab                 = gdt_output
    EXCEPTIONS
      program_error            = 1
      OTHERS                   = 2.
  IF sy-subrc <> 0.
    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
            WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
  ENDIF.
FORM build_events .
  DATA : lcf_ename TYPE char4.
  CALL FUNCTION 'REUSE_ALV_EVENTS_GET'
    EXPORTING
      i_list_type     = 0
    IMPORTING
      et_events       = gdt_events
    EXCEPTIONS
      list_type_wrong = 1
      OTHERS          = 2.
  IF sy-subrc <> 0.
    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
            WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
  ENDIF.
  READ TABLE gdt_events into gds_events WITH KEY name = slis_ev_top_of_page.
  IF sy-subrc = 0.
    gds_events-form = 'LIST_HEADER'.
    MODIFY gdt_events FROM gds_events INDEX sy-tabix.
    CLEAR gds_events.
  ENDIF.
ENDFORM.                    " BUILD_EVENTS
FORM LIST_HEADER.
  write  'sandeep'.
endform.