Grey out screen Fields after entering input using F4 help without an enter code

Hi Experts,
We have a requirement where we want the Input field on a dialog box screen to be greyed Out as soon as the user enters an
input in the respective field using F4 help without processing an ok code in PAI .
Hence we want to achieve a secured input feature that prevents user from altering the values coming from check table.
Regards
Kunal

Hello Kunal,
Try below code, it works for me.
TABLES : MARA.
DATA: BEGIN OF IT_MARA OCCURS 0,
MATNR LIKE MARA-MATNR,
END OF IT_MARA.
DATA : IT_RETURN TYPE STANDARD TABLE OF DDSHRETVAL WITH HEADER LINE.
PARAMETERS: p_matnr LIKE mara-matnr.
AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_matnr.
SELECT MATNR FROM MARA UP TO 10 ROWS INTO TABLE IT_MARA.
SORT IT_MARA BY MATNR.
DELETE ADJACENT DUPLICATES FROM IT_MARA COMPARING MATNR.
CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
    EXPORTING
      RETFIELD      = 'MATNR'
      DYNPPROG      = SY-REPID
      DYNPNR        = '1000'
      DYNPROFIELD    = 'P_MATNR'
      VALUE_ORG      = 'S'
    TABLES
      VALUE_TAB      = IT_MARA
      RETURN_TAB    = IT_RETURN
    EXCEPTIONS
      PARAMETER_ERROR = 1
      NO_VALUES_FOUND = 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 SCREEN.
    IF SCREEN-NAME EQ 'P_MATNR'.
    SCREEN-INPUT = '0'.
    MODIFY SCREEN.
    ENDIF.
ENDLOOP.
Regards,
Thanga

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Message was edited by: Vijay Sai

Grey out screen Fields after entering input using F4 help without an enter code

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