when click on display button it did not open tcode 'ME23N' in module pool programming.

[former_member809080]

TYPES: BEGIN OF st_mara,

         ernam TYPE mara-ernam,
         mtart TYPE mara-mtart,
         matkl TYPE mara-matkl,
       END OF st_mara.

TYPES: BEGIN OF st_ekko,
         bukrs TYPE ekko-bukrs,
         bstyp TYPE ekko-bstyp,
         bsart TYPE ekko-bsart,
       END OF st_ekko.

TYPES: BEGIN OF st_vbak,
         auart TYPE vbak-auart,
         vkorg TYPE vbak-vkorg,
         vtweg TYPE vbak-vtweg,

       END OF st_vbak.

DATA: wa_mara TYPE st_mara,
      wa_ekko TYPE st_ekko,
      wa_vbak TYPE st_vbak.

DATA: in_matnr TYPE mara-matnr,
      in_ebeln TYPE ekko-ebeln,
      in_vbeln TYPE vbak-vbeln.

DATA: r1,
      r2,
      r3.
DATA: gv_screen TYPE sy-dynnr.

MODULE status_0200 OUTPUT.
  SET PF-STATUS 'BACK'.

  IF r1 IS INITIAL AND r2 IS INITIAL AND r3 IS INITIAL.
    r1 = 'X'.
  ENDIF.

  IF r1 IS NOT INITIAL .
    gv_screen = '210'.
  ELSEIF r2 IS NOT INITIAL .
    gv_screen = '220'.
  ELSEIF r3 IS NOT INITIAL .
    gv_screen = '230'.
  ENDIF.
ENDMODULE.

MODULE user_command_0200 INPUT.
  CASE sy-ucomm.
    WHEN 'BACK'.
      LEAVE PROGRAM .

    WHEN 'DIS' .

      CALL FUNCTION 'CONVERSION_EXIT_ALZSN_INPUT'
        EXPORTING
          input  = in_matnr
        IMPORTING
          output = in_matnr.


      SELECT SINGLE

                       ernam
                       mtart
                       matkl
                               FROM mara INTO  wa_mara
                               WHERE matnr = in_matnr.

      IF wa_mara IS INITIAL.

        SELECT SINGLE  bukrs
                bstyp
                bsart FROM ekko INTO  wa_ekko
                WHERE ebeln = in_ebeln.

      ENDIF.

      IF wa_mara IS INITIAL AND wa_ekko IS INITIAL.

        CALL FUNCTION 'CONVERSION_EXIT_ALPHA_INPUT'
          EXPORTING
            input  = in_vbeln
          IMPORTING
            output = in_vbeln.

        SELECT SINGLE auart
                      vkorg
                      vtweg FROM vbak INTO wa_vbak WHERE vbeln = in_vbeln.

      ENDIF.

    WHEN 'C1'.
      CLEAR in_matnr.
      CLEAR wa_mara.
      CLEAR in_ebeln.
      CLEAR WA_EKKO.
      CLEAR in_vbeln.
      CLEAR wa_vbak.

 ENDCASE.
ENDMODULE.

MODULE user_command_0210 INPUT.
CASE sy-ucomm.
    WHEN 'DIS1'.
     SET PARAMETER ID 'MAT' FIELD in_matnr.
      CALL TRANSACTION 'MM03' .
 ENDCASE.
ENDMODULE.

MODULE user_command_0220 INPUT.
  CASE sy-ucomm.

    WHEN 'DIS2'.

    SET PARAMETER ID 'BES' FIELD in_ebeln.
      CALL TRANSACTION 'ME23N'.

  ENDCASE.

ENDMODULE.

MODULE user_command_0230 INPUT.

  CASE sy-ucomm.
    WHEN 'DIS3'.
      SET PARAMETER ID 'AUN' FIELD in_vbeln.
      CALL TRANSACTION 'VA03'.

  ENDCASE.
ENDMODULE.

[Sandra_Rossi]

You could just debug your program and see that it doesn't execute CALL TRANSACTION. So, the title of the question should not contain "did not open tcode 'ME23N'", as it's not the point.

[former_member809080 · Accepted solution]

DISPLAY button is under the document type

[former_member809080 · Accepted solution]

I Change display name like

DISPLAY = DISPLAY 1.