DATA: gt_result_tab TYPE TABLE OF zpp_result_tab_mpr5vs12.
DATA gs_result_tab LIKE LINE OF gt_result_tab.
DATA: gt_result_tab_alv LIKE TABLE OF gs_result_tab.
LOOP AT gt_result_tab INTO gs_result_tab.
  COLLECT gs_result_tab INTO gt_result_tab_alv.
ENDLOOP.

MODULE PBO OUTPUT.
  SET PF-STATUS 'MRP5_VS_12'.
   SET TITLEBAR 'MRP5_VS_12'.
  IF G_CUSTOM_CONTAINER IS INITIAL.
    CREATE OBJECT G_CUSTOM_CONTAINER
           EXPORTING CONTAINER_NAME = G_CONTAINER.
    CREATE OBJECT GRID1
           EXPORTING I_PARENT = G_CUSTOM_CONTAINER.
    CALL METHOD GRID1->SET_TABLE_FOR_FIRST_DISPLAY
         EXPORTING I_STRUCTURE_NAME = 'gs_result_tab'
                   IT_FIELDCATALOG = lvc_t_fcat
         CHANGING  IT_OUTTAB        = gt_result_tab_alv.
  ENDIF.
ENDMODULE.

Field "LVC_T_FCAT" is unknown. It is neither in one of the specified      

DATA: ok_code LIKE sy-ucomm,
      g_container TYPE scrfname VALUE 'ZPP_COPYDATA_MRP5_VS_12',
      grid1  TYPE REF TO cl_gui_alv_grid,
      gt_fieldcat TYPE lvc_t_fcat," каталог полей
      g_custom_container TYPE REF TO cl_gui_custom_container.

FIELD-SYMBOLS: <fs_fieldcat> TYPE lvc_s_fcat.

IT_FIELDCATALOG = gt_fieldcat[]

IT_FIELDCATALOG = gt_fieldcatalog

* create fieldcatalog
  CALL FUNCTION 'LVC_FIELDCATALOG_MERGE'
    EXPORTING
      i_structure_name       = i_structure_name
    CHANGING
      ct_fieldcat            = et_field_cat
    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
            RAISING internal_error.
  ENDIF.

MODULE PBO OUTPUT.
  SET PF-STATUS 'MRP5_VS_12'.
   SET TITLEBAR 'MRP5_VS_12'.
  IF G_CUSTOM_CONTAINER IS INITIAL.
    CREATE OBJECT G_CUSTOM_CONTAINER
           EXPORTING CONTAINER_NAME = G_CONTAINER.
    CREATE OBJECT GRID1
           EXPORTING I_PARENT = G_CUSTOM_CONTAINER.
    CALL METHOD GRID1->SET_TABLE_FOR_FIRST_DISPLAY
         EXPORTING I_STRUCTURE_NAME = 'gs_result_tab'
         CHANGING   it_fieldcatalog = gt_fieldcat[]
                    IT_OUTTAB        = gt_result_tab_alv.
  ENDIF.
ENDMODULE.

CALL METHOD grid->set_table_for_first_display
  EXPORTING
*    I_BUFFER_ACTIVE               =
*    I_BYPASSING_BUFFER            =
*    I_CONSISTENCY_CHECK           =
*    I_STRUCTURE_NAME              =
*    IS_VARIANT                    =
*    I_SAVE                        =
*    I_DEFAULT                     = 'X'
    IS_LAYOUT                     = gs_layout
*    IS_PRINT                      =
*    IT_SPECIAL_GROUPS             =
*    IT_TOOLBAR_EXCLUDING          =
*    IT_HYPERLINK                  =
*    IT_ALV_GRAPHICS               =
*    IT_EXCEPT_QINFO               =
  CHANGING
    it_outtab                     = olist
    IT_FIELDCATALOG               = alv_fcat
*    IT_SORT                       =
*    IT_FILTER                     =
  EXCEPTIONS
    INVALID_PARAMETER_COMBINATION = 1
    PROGRAM_ERROR                 = 2
    TOO_MANY_LINES                = 3
    others                        = 4.

MODULE PBO OUTPUT.
  SET PF-STATUS 'MRP5_VS_12'.
   SET TITLEBAR 'MRP5_VS_12'.
  IF G_CUSTOM_CONTAINER IS INITIAL.
    CREATE OBJECT G_CUSTOM_CONTAINER
           EXPORTING CONTAINER_NAME = G_CONTAINER.
    CREATE OBJECT GRID1
           EXPORTING I_PARENT = G_CUSTOM_CONTAINER.
    CALL METHOD GRID1->SET_TABLE_FOR_FIRST_DISPLAY
         EXPORTING I_STRUCTURE_NAME = 'gs_result_tab'
*                   IT_FIELDCATALOG = gt_fieldcat[] "название каталога полей

         CHANGING   IT_OUTTAB        = gt_result_tab_alv
                    it_fieldcatalog = gt_fieldcat[].
  ENDIF.
ENDMODULE.

CALL METHOD GRID1->SET_TABLE_FOR_FIRST_DISPLAY
         EXPORTING I_STRUCTURE_NAME = 'gs_result_tab'
*                   IT_FIELDCATALOG = gt_fieldcat[] "название каталога полей
                    is_layout = gs_layout

         CHANGING   IT_OUTTAB        = gt_result_tab_alv
                    it_fieldcatalog = gt_fieldcat[].

gs_layout TYPE lvc_s_layo,