Added custom screen in PO using BADI ME_GUI_PO_CUST and ME_PROCESS_PO_CUST

Question

Hi All,
I have added custom screen with two z fields at item level using BADI ME_GUI_PO_CUST and ME_PROCESS_PO_CUST i can see my screen in tcodes ME21N , ME22N , ME23N but I am not able to save data.
and also screen is coming in change mode even in ME23N .
thanks.

Answer 1

Hi,
I have added two xfields at item level.
This is the code i have added in zimplementation ZME_GUI_PO_CUST .
IN Zimplementation ME_PROCESS_PO_CUST I have added code only in method FIELDSELECTION_ITEM . after doing this I can see only screens in ME21N, ME22N, ME23N but when enter data in zfields and trying to save it is giving me message no data has changed.
method IF_EX_ME_GUI_PO_CUST~SUBSCRIBE.
DATA: ls_subscriber LIKE LINE OF re_subscribers.
we want to add a customer subscreen on the item detail tab
  CHECK im_application = 'PO'.
  CHECK im_element     = 'ITEM'.
each line in re_subscribers generates a subscreen. We add one subscreen in this example
  CLEAR re_subscribers[].
the name is a unique identifier for the subscreen and defined in this class definition
  ls_subscriber-name = subscreen1.
the dynpro number to use
  ls_subscriber-dynpro = '0001'.
the program where the dynpro can be found
  ls_subscriber-program = 'SAPLYMEPOBADIEX'.
each subscreen needs his own DDIC-Structure
  ls_subscriber-struct_name = 'MEPO_BADI_STRUCT'.
a label can be defined
  ls_subscriber-label = text-001.
the position within the tabstrib can be defined
  ls_subscriber-position = 4.
the height of the screen can be defined here. Currently we suport two screen sizes:
value <= 7 a sevel line subscreen
value > 7  a 16 line subscreen
  ls_subscriber-height = 7.
  APPEND ls_subscriber TO re_subscribers.
  ENDIF.
method IF_EX_ME_GUI_PO_CUST~TRANSPORT_FROM_MODEL.
  DATA: l_item       TYPE REF TO if_purchase_order_item_mm,
        ls_mepoitem  TYPE mepoitem,
        ls_customer  TYPE mepo_badi_exampl.
system asks to transport data from the business logic into the view
  CASE im_name.
    WHEN subscreen1.
is it an item? im_model can be header or item.
      mmpur_dynamic_cast l_item im_model.
      CHECK NOT l_item IS INITIAL.
transport standard fields
      ls_mepoitem = l_item->get_data( ).
transport customer fields
      CALL FUNCTION 'YMEPOBADIEX_GET_DATA'
        EXPORTING
          im_ebeln = ls_mepoitem-ebeln
          im_ebelp = ls_mepoitem-ebelp
        IMPORTING
          ex_data  = ls_customer.
store info for later use
      MOVE-CORRESPONDING ls_mepoitem TO dynp_data_pbo.
      MOVE ls_customer-badi_bsgru TO dynp_data_pbo-badi_bsgru.
      MOVE ls_customer-badi_afnam TO dynp_data_pbo-badi_afnam.
    WHEN OTHERS.
  ENDCASE.
endif.
method IF_EX_ME_GUI_PO_CUST~TRANSPORT_TO_DYNP.
  CASE im_name.
    WHEN subscreen1.
      CALL FUNCTION 'YMEPOBADIEX_PUSH'
        EXPORTING
          im_dynp_data = dynp_data_pbo.
    WHEN OTHERS.
  ENDCASE.
ENDIF.
endmethod.
method IF_EX_ME_GUI_PO_CUST~TRANSPORT_FROM_DYNP.
  CASE im_name.
    WHEN subscreen1.
      CALL FUNCTION 'YMEPOBADIEX_POP'
        IMPORTING
          ex_dynp_data = dynp_data_pai.
      IF dynp_data_pai NE dynp_data_pbo.
something has changed therefor we have to notify the framework
to transport data to the model
        re_changed = mmpur_yes.
      ENDIF.
    WHEN OTHERS.
  ENDCASE.
ENDIF.
endmethod.
method IF_EX_ME_GUI_PO_CUST~TRANSPORT_TO_MODEL.
DATA: l_item       TYPE REF TO if_purchase_order_item_mm,
        ls_mepoitem  TYPE mepoitem,
        ls_customer  TYPE mepo_badi_exampl.
data have to be transported to business logic
  CASE im_name.
    WHEN subscreen1.
is it an item? im_model can be header or item.
      mmpur_dynamic_cast l_item im_model.
      CHECK NOT l_item IS INITIAL.
      ls_mepoitem = l_item->get_data( ).
standard fields changed?
     IF dynp_data_pbo-matkl NE dynp_data_pai-matkl OR
        dynp_data_pbo-plifz NE dynp_data_pai-plifz OR
        dynp_data_pbo-webaz NE dynp_data_pai-webaz.
update standard fields
       ls_mepoitem-matkl = dynp_data_pai-matkl.
       ls_mepoitem-plifz = dynp_data_pai-plifz.
       ls_mepoitem-webaz = dynp_data_pai-webaz.
        CALL METHOD l_item->set_data( ls_mepoitem ).
     ENDIF.
        CALL FUNCTION 'YMEPOBADIEX_GET_DATA'
          EXPORTING
            im_ebeln = ls_mepoitem-ebeln
            im_ebelp = ls_mepoitem-ebelp
          IMPORTING
            ex_data  = ls_customer.
        ls_customer-badi_bsgru = dynp_data_pai-badi_bsgru.
        ls_customer-badi_afnam = dynp_data_pai-badi_afnam.
        CALL FUNCTION 'YMEPOBADIEX_SET_DATA'
          EXPORTING
            im_data = ls_customer.
     ENDIF.
    WHEN OTHERS.
  ENDCASE.
ENDIF.
method IF_EX_ME_PROCESS_PO_CUST~FIELDSELECTION_ITEM.
DATA: l_persistent TYPE mmpur_bool.
CONSTANTS:
FIELD-SYMBOLS: <fs> LIKE LINE OF ch_fieldselection.
l_persistent = im_item->is_persistent( ).
*IF l_persistent EQ mmpur_yes.
READ TABLE ch_fieldselection ASSIGNING <fs> WITH TABLE KEY
                     metafield = MMMFD_YYMAN_NUM."fd_cust_01.
IF sy-subrc IS INITIAL.
<fs>-fieldstatus = '*'. " Display <-- this one was as per the sample code given.
<fs>-fieldstatus = '+'. " Input <-- this i added to make the field mandatory.
ENDIF.
READ TABLE ch_fieldselection ASSIGNING <fs> WITH TABLE KEY
                     metafield = MMMFD_YYMAN_DES."fd_cust_01.
IF sy-subrc IS INITIAL.
<fs>-fieldstatus = '*'. " Display <-- this one was as per the sample code given.
<fs>-fieldstatus = '+'. " Input <-- this i added to make the field mandatory.
ENDIF.
*ENDIF.
ENDIF.
endmethod.