Add custom field in Material Master

1.Add fields in the Append Structure of table MARA.

2.Configure

SPRO IMG -> Logistics General -> Material Master -> Configuring the Material Master -> Create Programs for Customized Subscreens
SE80 display FUGR MGD1 and select the screen (MM View sub-screen) you want to enhance with your own fields – in our case it will be screen 2701 (Storage data: general data) Copy the selected screen from MGD1 to your FUGR (keep its current number)  

3.Paint

4.Coding

 process before output.
  module modify_screen.
  module get_data.
 process after input.


  chain.
    field:
      mara-zz_tl_fot_status,
      mara-zz_tl_fot_date,
      mara-zz_tl_fot_time.
    module check_fot_input.
  endchain.


  chain.
    field:
      mara-zz_tl_isi_status,
      mara-zz_tl_isi_date,
      mara-zz_tl_isi_time.
    module check_isi_input.
  endchain.

  field mara-zz_tl_fot_status.
  field mara-zz_tl_fot_date.
  field mara-zz_tl_fot_time.
  field mara-zz_tl_isi_status.
  field mara-zz_tl_isi_date.
  field mara-zz_tl_isi_time.
  module set_data_output.

module modify_screen output.
  case sy-tcode.
    when 'MM03'.
      loop at screen.
        case screen-group1.
          when 'G1'.
            screen-input = 0.
            modify screen.
        endcase.
      endloop.
    when 'MM01' or 'MM02'.
      loop at screen.
        case screen-group1.
          when 'G1'.
              screen-input = 1.
              modify screen.
        endcase.
       endloop.
  endcase.
endmodule.                 " MODIFY_SCREEN  OUTPUT

module get_data output.
  call function 'MARA_GET_SUB'
   importing
     wmara         = mara
     xmara         = *mara
     ymara         = lmara
            .

endmodule.                 " GET_DATA  OUTPUT

module check_isi_input input.
  if mara-zz_tl_isi_status is initial
    and ( mara-zz_tl_isi_date is not initial or mara-zz_tl_isi_time is not initial ).
    clear: mara-zz_tl_isi_date,mara-zz_tl_isi_time.
    message 'Select the the ISI status first' type 'E'.
  endif.

  if mara-zz_tl_isi_status is not initial
    and ( mara-zz_tl_isi_date is initial or mara-zz_tl_isi_time is initial )..
    message 'Please fill in the ISI status date and time' type 'E'.
  endif.
endmodule.                 " CHECK_DATA_INPUT  INPUT

module set_data_output input.
  data:
        lv_fot_status type mara-zz_tl_fot_status,
        lv_fot_date type mara-zz_tl_fot_date,
        lv_fot_time type mara-zz_tl_fot_time,
        lv_isi_status type mara-zz_tl_isi_status,
        lv_isi_date type mara-zz_tl_isi_date,
        lv_isi_time type mara-zz_tl_isi_time.
  data lv_mail_flag type flag.

  check sy-tcode eq 'MM01' or sy-tcode eq 'MM02'.

  lv_fot_status = mara-zz_tl_fot_status.
  lv_fot_date = mara-zz_tl_fot_date.
  lv_fot_time = mara-zz_tl_fot_time.
  lv_isi_status = mara-zz_tl_isi_status.
  lv_isi_date = mara-zz_tl_isi_date.
  lv_isi_time = mara-zz_tl_isi_time.
  export lv_fot_status to memory id 'MARA_FOT_STATUS'.
  export lv_fot_date to memory id 'MARA_FOT_DATE'.
  export lv_fot_time to memory id 'MARA_FOT_TIME'.
  export lv_isi_status to memory id 'MARA_ISI_STATUS'.
  export lv_isi_date to memory id 'MARA_ISI_DATE'.
  export lv_isi_time to memory id 'MARA_ISI_TIME'.

endmodule.                 " SET_DATA_OUTPUT  INPUT

4.Configure

Go to customizing for the MM views in SPRO IMG -> Logistics
General -> Material Master -> Configuring the Material Master
-> Define Structure of Data Screens for Each Screen Sequence (Tcode OMT3)

5.In FM:EXIT_SAPLMGMU_001.include zxmg0u02.

This user exit is called every time PAI is triggered.

if ( sy-tcode eq 'MM01' or sy-tcode eq 'MM02' ) and cmara-matnr cp 'T01*'.
    data:
        lv_fot_status type mara-zz_tl_fot_status,
        lv_fot_date type mara-zz_tl_fot_date,
        lv_fot_time type mara-zz_tl_fot_time,
        lv_isi_status type mara-zz_tl_isi_status,
        lv_isi_date type mara-zz_tl_isi_date,
        lv_isi_time type mara-zz_tl_isi_time.
   "To be easily understand
   "import lv_fot_status from memory id 'MARA_FOT_STATUS'.
   "cmara-zz_tl_fot_status =  lv_fot_status.
   
    import lv_fot_status = cmara-zz_tl_fot_status from memory id 'MARA_FOT_STATUS'.
    import lv_fot_date = cmara-zz_tl_fot_date from memory id 'MARA_FOT_DATE'.
    import lv_fot_time = cmara-zz_tl_fot_time from memory id 'MARA_FOT_TIME'.
    import lv_isi_status from memory id 'MARA_ISI_STATUS'.
    if 'X' eq lv_isi_status and 'X' ne cmara-zz_tl_isi_status.
      call function 'ZZXMG0U02_SEND_MAIL' 
        exporting
          iv_material       = cmara-matnr
                .
    endif.
    cmara-zz_tl_isi_status = lv_isi_status.
    import lv_isi_date = cmara-zz_tl_isi_date from memory id 'MARA_ISI_DATE'.
    import lv_isi_time = cmara-zz_tl_isi_time from memory id 'MARA_ISI_TIME'.
  endif.

Parameter ID must be same in “export” and “import”

4. Another example.

process before output.
 module liste_initialisieren.
 loop at extract with control
  tctrl_zcustomer_name cursor nextline.
   module liste_show_liste.
 endloop.
*
process after input.
 module liste_exit_command at exit-command.
 module liste_before_loop.
 loop at extract.
   module liste_init_workarea.
   chain.
    field zcustomer_name-zcustomer_name .
    module set_update_flag on chain-request.
   endchain.
   field vim_marked module liste_mark_checkbox.
   chain.
    field zcustomer_name-zcustomer_name .
    module liste_update_liste.
   endchain.
 endloop.
 module liste_after_loop.