Calling Function Module RV_ORDER_FLOW_INFORMATION in a Loop!

Question

Hi Guys,
I need to fetch SD document Flow data into Bw for which I have created an Extractor using function modules. I am using a Standard FM  "RV_ORDER_FLOW_INFORMATION" which is called in the LOOP as below.
LOOP AT VIT_VBRK INTO VFL_VBRK.
    CLEAR VBCO6.
    VBCO6-MANDT = SY-MANDT.
    VBCO6-VBELN = VFL_VBRK-VBELN.
    REFRESH TVBFA_TAB[].
    CLEAR TVBFA_TAB.
CALL FUNCTION 'RV_ORDER_FLOW_INFORMATION'
  EXPORTING
   AUFBEREITUNG        = '2'
   BELEGTYP            = VFL_VBRK-VBTYP
    COMWA               = VBCO6
   NACHFOLGER          = 'X'
   N_STUFEN            = '50'
   VORGAENGER          = 'X'
   V_STUFEN            = '50'
IMPORTING
   BELEGTYP_BACK       = BELEG_TYP
  TABLES
    VBFA_TAB            = TVBFA_TAB
EXCEPTIONS
   NO_VBFA             = 1
   NO_VBUK_FOUND       = 2
   OTHERS              = 3
IF SY-SUBRC <> 0.
ENDIF.
*OTHER CODE LOGIC*
ENDLOOP.
Now the problem is if I run this only once, i.e VIT_VBRK having only 1 document, the result I get is correct. However, if this same code is run in a LOOP with many different values in VIT_VBRK, the first Loop gives correct values and all subsequent values (value of TVBFA_TAB- RFMNG to be precise) are incorrect.
I am guessing this is b'coz of some internal tables and work areas specific to the function module are not refreshed and the values of earlier iterations are adding up in the subsequent runs. can any one tell me if theres any specific 'REFRESH' statement or FM to be called before calling this FM.
Thanks in Advance,
Parth Shah.

Answer 1

Hi Matt,
I debugged the Function module like u said in 2 different Session, what I found was that there is a yet another function module called with in the FM RV_ORDER_FLOW_INFORMATION, i.e "GET_HANDLE_SD_DOCUMENTFLOW_SP" heres what the code in this FM looks like.
FUNCTION GET_HANDLE_SD_DOCUMENTFLOW_SP.
*"Lokale Schnittstelle:
*"  EXPORTING
*"     REFERENCE(HANDLE) TYPE REF TO  IF_EX_BADI_SD_DOCUMENTFLOW
*"     VALUE(ACTIVE) TYPE  XFELD
IF L_HANDLE_SD_DOCUMENTFLOW IS INITIAL.
    CALL METHOD CL_EXITHANDLER=>GET_INSTANCE
      IMPORTING
        ACT_IMP_EXISTING = BADI_SD_DOCUMENTFLOW_ACTIVE
      CHANGING
        INSTANCE         = L_HANDLE_SD_DOCUMENTFLOW
        EXCEPTIONS
        OTHERS           = 1.
    IF NOT SY-SUBRC = 0.
      CLEAR BADI_SD_DOCUMENTFLOW_ACTIVE.
    ENDIF.
  ENDIF.
  HANDLE = L_HANDLE_SD_DOCUMENTFLOW.
  ACTIVE = BADI_SD_DOCUMENTFLOW_ACTIVE.
ENDFUNCTION.
the only difference I found in the two sessions was that L_HANDLE_SD_DOCUMENTFLOW  is initial in the first run and then in all subsequent run its value remains the same, while in fact it should reset. Sadly there is no REFRESH procedure / Subroutine for it.
Any idea how i can refresh it, or may be by-pass this check (IF L_HANDLE_SD_DOCUMENTFLOW IS INITIAL) ?
Edited by: shahparth on Feb 17, 2011 8:39 AM