ABAP: Customized F4 help

If we use F4 help on one field and want to transfer values for another field on the screen with values based  the input field.


    data loto TYPE TABLE OF dselc.

    data ls_loto TYPE dselc.


Fill DYNPFLD_MAPPING with fieldname and screen-name

    ls_loto-fldname = 'CARRID'.

    ls_loto-dyfldname = 'ABC'.

    APPEND ls_loto to loto.

    CLEAR ls_loto.

     ls_loto-fldname = 'CONNID'.

    ls_loto-dyfldname = 'ABCD'.

    APPEND ls_loto to loto.

CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'

  EXPORTING

   DDIC_STRUCTURE         = 'SFLIGHT'

    retfield               = 'CARRID'

   DYNPPROG               = sy-repid

   DYNPNR                 = sy-dynnr

   DYNPROFIELD            = 'ABC'

   VALUE_ORG              = 'S'

  tables

    value_tab             = it_sflight

   FIELD_TAB              = lot

   RETURN_TAB             = ret

   DYNPFLD_MAPPING        = loto.



This will automatically fill the other field as well (here CONNID).