Trapping error in webdynpro when calling a function

Question

Hi all,
I am using Adobe interactive forms and within the onsubmitevent I have webdynpro code which calls a standard function 'FMFR_CREATE_FROM_DATA' to do commitments. See code snippet below. The problem is when there is an error from the function the function simply hangs and does not come out of it.. I have tested this function as standalone via SE37 and works perfectly and also from a normal ABAP program the error can be trapped. Is it possible to trap this within webdynpro?
          CALL FUNCTION 'FMFR_CREATE_FROM_DATA'
            EXPORTING
              I_FLG_CHECKONLY           = ' '
              I_FLG_COMMIT              = 'X'
                TABLES
                  T_POSDATA                 = wa_fid_tab
                CHANGING
                  C_F_HEADDATA              = wa_fih
            EXCEPTIONS
              DOCTYPE_NOT_ALLOWED       = 1
              ERROR_OCCURED             = 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.
                   RAISE EXCEPTION TYPE ZCX_NO_CC_BUDGET.
                ELSE.
                    " Update RFP table with consolidated amount
                    " per CC/PC and commitment no. 
                    UPDATE ZAD_RFP_T
                    SET CURRENCY_AMOUNT = RFP_TOTAL1
                                 AMOUNT = RFP_TOTAL1
                        COMMITMENT_NO = wa_fih-belnr
                    WHERE DOCUMENT_ID = RFP_ID
                    AND LINE_ID = line_one .
                ENDIF.

Answer 1

Thanks guys but i already tried this ie. uncommenting the exception but it never returns to the next line ie to theIF SY-SUBRC line in the code snippet below. The program simply hangs!!!
          CALL FUNCTION 'FMFR_CREATE_FROM_DATA'
            EXPORTING
              I_FLG_CHECKONLY           = ' '
              I_FLG_COMMIT              = 'X'
                TABLES
                  T_POSDATA                 = wa_fid_tab
                CHANGING
                  C_F_HEADDATA              = wa_fih
             EXCEPTIONS
               DOCTYPE_NOT_ALLOWED       = 1
               ERROR_OCCURED             = 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.
                   RAISE EXCEPTION TYPE ZCX_NO_CC_BUDGET.
                ELSE.
                    " Update RFP table with consolidated amount
                    " per CC/PC and commitment no.  -
                    UPDATE ZAD_RFP_T
                    SET CURRENCY_AMOUNT = RFP_TOTAL1
                                 AMOUNT = RFP_TOTAL1
                        COMMITMENT_NO = wa_fih-belnr
                    WHERE DOCUMENT_ID = RFP_ID
                    AND LINE_ID = line_one .
                ENDIF.