Feldkatalog für ALV abhängig von bestimmten Werten?

Code: Alles auswählen.

  CALL FUNCTION 'LVC_FIELDCATALOG_MERGE'
    EXPORTING
      i_structure_name       = 'XY'
      i_client_never_display = ''
    CHANGING
      ct_fieldcat            = ct_fieldcat
    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.

    LOOP AT lt_fieldcat INTO ls_fieldcat
                       WHERE fieldname = 'Feld2'.
* --> §1.Set status of column START_NACHARB to editable.
      ls_fieldcat-edit = 'X'.
* --> Field 'checktable' is set to avoid shortdumps that are caused
*     by inconsistend data in check tables. You may comment this out
*     when the test data of the flight model is consistent in your
*     system.
      ls_fieldcat-checktable = '!'.  "do not check foreign keys
      MODIFY lt_fieldcat FROM ls_fieldcat.
    ENDLOOP.

Code: Alles auswählen.

...
    LOOP AT lt_fieldcat INTO ls_fieldcat
                       WHERE fieldname = 'Feld2'.
      CLEAR:   ls_fieldcat-edit
             , ls_fieldcat-checktable
             .
      MODIFY lt_fieldcat FROM ls_fieldcat.
    ENDLOOP.