Ansicht ALV passt nicht zu DB-Inhalten

Code: Alles auswählen.

  case sy-ucomm.
    when 'BACK'.
        perform data_changed.
      leave to screen 0.

    when 'END' or 'CANC'.
      leave to screen 0.
    when 'SAVE'.
      perform save_values.
  endcase.
....

*&---------------------------------------------------------------------*
*&      Form  data_changed
*&---------------------------------------------------------------------*
form data_changed .

  data: l_valid type c.

  call method re_alv_reorg->check_changed_data
    importing
      e_valid = l_valid.

  if l_valid is initial.
    call function 'POPUP_TO_INFORM'
      exporting
        titel = text-t04      "Eingabefehler
        txt1  = text-t05    "Die Eingaben sind noch nicht konsistent.
        txt2  = text-t06    "Überprüfen Sie die Eingaben
        txt3  = text-t07.  "anhand des Fehlerprotokolls.

  else.

    data:   lt_del type table of ty_reorg
          , lt_add type table of ty_reorg
          , lt_mod type table of ty_reorg
          , l_flag type flag
          .


    call function 'CTVB_COMPARE_TABLES'
      exporting
        table_old  = gt_reorg_alt[]
        table_new  = gt_reorg[]
        key_length = 254
      importing
        table_del  = lt_del[]
        table_add  = lt_add[]
        table_mod  = lt_mod[]
        no_changes = l_flag.

    if l_flag is initial.
* --> Daten wurden geändert
      data: l_answer(1) type c.

      call function 'POPUP_TO_CONFIRM'
        exporting
          text_question               = 'veränderte Daten sichern?'
         text_button_1               = 'Ja'(001)
         text_button_2               = 'Nein'(002)
       importing
         answer                      = l_answer
      exceptions
         text_not_found              = 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.

     if l_answer = '1'.
* Ja
        perform save_values.
      elseif l_answer = '2'.
* Nein
      endif.
    endif.
  endif.