Reg:Auto Invoice Creation After Pgi

Dear Experts,

Please help me regarding this.....

In my requirement my user wants to create an invoice automatically and sends it to local printer for printing when PGI button is clicked on Vl01n/Vl02n

screen with respect to delivery.

I tried using Badi LE_SHP_DELIVERY_PROC. In this badi i tried methods save_document_prepare,SAVE_AND_PUBLISH_DOCUMENT,SAVE_AND_PUBLISH_BEFORE_OUTPUT,SAVE_AND_PUBLISH_DOCUMENT.

I tried userexits in SAPMV50A~MV50AFZ1----USEREXIT_SAVE_DOCUMENT,USEREXIT_SAVE_DOCUMENT_PREPARE.

my sample code as follows...

BREAK-POINT.
data : t_vbrk     type TABLE OF bapivbrk," WITH HEADER LINE,
        w_vbrk     type  bapivbrk ,"WITH HEADER LINE,
        return     type TABLE OF bapiret1," WITH HEADER LINE,
        w_return   type  bapiret1," WITH HEADER LINE,
        success    type TABLE OF BAPIVBRKSUCCESS," WITH HEADER LINE.
        w_success  type  BAPIVBRKSUCCESS ,"WITH HEADER LINE.
        xlikp      type  likp.
loop at ct_xlikp into xlikp.
if xlikp-vkorg eq 'RME1' and sy-ucomm eq 'WABU_T'.

    w_vbrk-ordbilltyp = xlikp-fkarv.          " likp MANDATORY
    w_vbrk-ref_doc    = xlikp-vbeln.         " likp MANDATORY
    w_vbrk-ref_doc_ca =  'J'.                    " hard code MAINTAINED IN LIKP TABLE MADATORY
    append w_vbrk to t_vbrk.
    CLEAR w_vbrk.
CALL FUNCTION 'BAPI_BILLINGDOC_CREATEMULTIPLE'
   EXPORTING
*   CREATORDATAIN   =
     TESTRUN               = 'X'
*   POSTING               =
   TABLES
     BILLINGDATAIN       = t_vbrk
*   CONDITIONDATAIN  =
*   CCARDDATAIN         =
*   TEXTDATAIN            =
*   ERRORS                  =
     RETURN                   = return
     SUCCESS                = success.
   endif.
   endloop.

But I am getting error in Return table as "VF 066 Goods issue has not been posted for the delivery"...

Kindly please help me on this to find a right userexit/badi after the PGI Posted .....

I need to close this immediately.....

anybody please help me on this....

Thanks and Regards

Mahesh.P