RFC enabled function module is not runing the BDC code in it.

Dear Experts,
1. We have created a RFC enabled function module to change status of a activity and to save it we are using BDC code and we have also put the code in the RFC FM only.
The RFC fm is runing fine and changing the data and also saving it by runing the BDC when run in the R/3 system only.
But when i run the FM from portal its just chaning the status but not runing the BDC code in it.
below i am puting the code of the FM.
FUNCTION ZRFC_CRM_STATUS_CHANGE_EXTERN .
""Local Interface:
*" IMPORTING
*"     VALUE(CHECK_ONLY) TYPE XFELD DEFAULT ' '
*"     VALUE(CLIENT) LIKE SY-MANDT DEFAULT SY-MANDT
*"     VALUE(OBJNR) TYPE CRM_JSTO-OBJNR OPTIONAL
*"     VALUE(USER_STATUS) LIKE CRM_JEST-STAT
*"     VALUE(SET_INACT) TYPE XFELD DEFAULT ' '
*"     VALUE(SET_CHGKZ) LIKE CRM_JSTO-CHGKZ OPTIONAL
*"     VALUE(XNOAUTO) LIKE CRM_JSTO_UPD-XNOAUTO OPTIONAL
*"     VALUE(NO_CHECK) TYPE XFELD DEFAULT ' '
*"     VALUE(ZOBJNR) TYPE CHAR80
*"     VALUE(OBJECT_ID) TYPE CRMT_OBJECT_ID
*" EXPORTING
*"     VALUE(STONR) LIKE TJ30-STONR
*" EXCEPTIONS
*"      OBJECT_NOT_FOUND
*"      STATUS_INCONSISTENT
*"      STATUS_NOT_ALLOWED
*{   INSERT         D60K900707                                        1
DATA: BEGIN OF JSTAT_TMP.
          INCLUDE STRUCTURE JSTAT.
DATA: END OF JSTAT_TMP.
data: bdcdata like bdcdata occurs 0 with header line.
data: dire type CRMD_ACTIVITY_H-direction.
CLEAR: DIRE.
OBJNR = ZOBJNR.
MANDT = CLIENT.
JSTAT_TMP-STAT = USER_STATUS.
JSTAT_TMP-INACT = SET_INACT.
IF USER_STATUS+0(1) NE EXTERN.
    RAISE STATUS_NOT_ALLOWED.
ENDIF.
Statusobjekt ggf. einlesen
PERFORM STATUS_READ USING OBJNR IOBTYP ISTSMA NOT_FOUND.
CHECK NOT_FOUND = OFF.
ggf. Änderungsbelege aktivieren
IF SET_CHGKZ = 'X' AND JSTO_BUF-CHGKZ = SPACE AND CHECK_ONLY = SPACE.
    PERFORM SET_CHGKZ USING OBJNR.
ENDIF.
set XNOAUTO-flag if desired
IF XNOAUTO = 'X' AND CHECK_ONLY = SPACE.
    PERFORM SET_XNOAUTO USING OBJNR.
ENDIF.
crm_jostd-OBJNR = OBJNR.
Status-Puffer füllen
REFRESH JEST_BUF_A.
REFRESH JEST_BUF_E.
CLEAR   JEST_BUF_A.
CLEAR   JEST_BUF_E.
CLEAR JEST_K.
MOVE MANDT       TO JEST_K-MANDT.
MOVE crm_jostd-OBJNR TO JEST_K-OBJNR.
READ TABLE JEST_BUF WITH KEY JEST_K BINARY SEARCH.
IF SY-SUBRC IS INITIAL.
    TABIX = SY-TABIX.
    MOVE-CORRESPONDING JEST_BUF TO JEST_BUF_E.
    APPEND JEST_BUF_E.
    MOVE-CORRESPONDING JEST_BUF TO JEST_BUF_A.
    MOVE MANDT TO JEST_BUF_A-MANDT.
    APPEND JEST_BUF_A.
    DO.
      ADD 1 TO TABIX.
      READ TABLE JEST_BUF INDEX TABIX.
      IF SY-SUBRC IS INITIAL AND JEST_BUF-OBJNR = crm_jostd-OBJNR.
        MOVE-CORRESPONDING JEST_BUF TO JEST_BUF_E.
        APPEND JEST_BUF_E.
        MOVE-CORRESPONDING JEST_BUF TO JEST_BUF_A.
        MOVE MANDT TO JEST_BUF_A-MANDT.
        APPEND JEST_BUF_A.
      ELSE.
        EXIT.
      ENDIF.
    ENDDO.
ENDIF.
g_no_check = no_check.
OBJNR = ZOBJNR.
PERFORM STATUS_CHANGE_EXTERN USING CHECK_ONLY
                                     OBJNR
                                     JSTAT_TMP
                                     EXTERN.
clear g_no_check.
Zurückschreiben in Puffer
PERFORM CHG_JEST_BUF_E.
ggf. Statusordnungsnummer ermitteln
IF STONR IS REQUESTED.
    CALL FUNCTION 'CRM_STATUS_READ'
         EXPORTING
              OBJNR       = OBJNR
              ONLY_ACTIVE = 'X'
         IMPORTING
              STONR       = STONR.
ENDIF.
CALL FUNCTION 'BAPI_TRANSACTION_COMMIT'
EXPORTING
   WAIT          = 'X'
IMPORTING
RETURN        =
*COMMIT WORK.
wait up to 10 seconds.
CLEAR bdcdata.
bdcdata-program = 'SAPLCRM_1O_MANAG_UI'.
bdcdata-dynpro   = '0100'.
bdcdata-dynbegin = 'X'.
APPEND bdcdata.
   CLEAR bdcdata.
bdcdata-fnam = 'BDC_OKCODE'.
bdcdata-fval = '=READ'.
APPEND bdcdata.
CLEAR bdcdata.
bdcdata-program = 'SAPLCRM_1O_MANAG_UI'.
bdcdata-dynpro   = '0510'.
bdcdata-dynbegin = 'X'.
APPEND bdcdata.
   CLEAR bdcdata.
bdcdata-fnam = 'BDC_CURSOR'.
bdcdata-fval = 'GV_OBJECT_ID'.
APPEND bdcdata.
   CLEAR bdcdata.
bdcdata-fnam = 'GV_OBJECT_ID'.
bdcdata-fval = OBJECT_ID.
APPEND bdcdata.
     CLEAR bdcdata.
bdcdata-fnam = 'BDC_OKCODE'.
bdcdata-fval = '=OKAY'.
APPEND bdcdata.
CLEAR bdcdata.
bdcdata-program = 'SAPLCRM_1O_MANAG_UI'.
bdcdata-dynpro   = '0100'.
bdcdata-dynbegin = 'X'.
APPEND bdcdata.
CLEAR bdcdata.
bdcdata-fnam = 'BDC_OKCODE'.
bdcdata-fval = '=1OMAIN_TT'.
APPEND bdcdata.
CLEAR bdcdata.
bdcdata-program = 'SAPLCRM_1O_MANAG_UI'.
bdcdata-dynpro   = '0100'.
bdcdata-dynbegin = 'X'.
APPEND bdcdata.
   CLEAR bdcdata.
bdcdata-fnam = 'BDC_CURSOR'.
bdcdata-fval = 'CRMT_7010_ACTIVITY_UI-DIRECTION'.
APPEND bdcdata.
select single direction from CRMD_ACTIVITY_H into dire
                              where guid = objnr.
if sy-subrc = 0.
    if dire = '0'.
      dire = '1'.
    elseif dire = '1'.
     dire = ''.
   elseif dire is initial.
     dire = '1'.
    endif.
endif.
CLEAR bdcdata.
bdcdata-fnam = 'CRMT_7010_ACTIVITY_UI-DIRECTION'.
bdcdata-fVAL = DIRE.
APPEND bdcdata.
CLEAR bdcdata.
bdcdata-fnam = 'BDC_OKCODE'.
bdcdata-fval = '=SAVE'.
APPEND bdcdata.
CALL TRANSACTION 'CRMD_BUS2000126' using bdcdata mode 'N'.
CALL FUNCTION 'BAPI_TRANSACTION_COMMIT'
EXPORTING
   WAIT          = 'X'
IMPORTING
RETURN        =
*COMMIT WORK.
wait up to 5 seconds.
*}   INSERT
ENDFUNCTION.
Thanks and regards
Neel

Dear experts,
Already the FM is RFC enabled other i won't be able to call it from portal
and coming to using the BAPI_ACTIVITY CHANGE fm that acting very weird so we are using the CRM EXTERN CHANGE USER STATUS fm which is working fine but the only problem is even when we comit from BAPI_TRANSACTION_COMMIT its not getting the delta queue of BW updated eventhough its chaning the status.
So for the above reasons we are using the BDC code in the FM for pressing the save button then its will update the changes to BW delta queue as well.
its working fine when i run it from the system in tcode SE37 only the BDC code is not runing when i am doing it from portal apart from the fm is chaning the status .
thanks and regards
Neel

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