Regarding same invoice reference

Question

hi sirs,
This is my requirement
When invoices are interfaced from Doris/concorde/service web into SAP they are sometimes sent over twice. We want SAP to check if an invoice has already been interfaced (sales order exists with same invoice reference and booking reference) and if it has then we want the idoc to be made to fail and stop in BD87.
for this requirement i have maintain code like this in this include ZXVEDU03
IF segment-segnam = 'E1EDK02'.
Transfer E1EDK02 structure to work area..
  ls_e1edk02 = segment-sdata.
  IF ls_e1edk02-qualf = '001'.
    DATA:l_vbeln TYPE vbeln,
         l_zblnr TYPE xblnr,
         l_xblnr TYPE xblnr.
    CLEAR ls_xvbak1.
    MOVE dxvbak TO ls_xvbak1.
    SPLIT  ls_e1edk02-belnr AT '-' INTO l_xblnr l_zblnr.
    SELECT SINGLE vbeln
           FROM vbak INTO l_vbeln
           WHERE xblnr = l_xblnr
             AND zblnr = ls_xvbak1-zblnr.
    IF sy-subrc = 0.
      sy-msgid = '00'.
      sy-msgno = '001'.
      sy-msgv1 = 'Sales Order already exists for Invoice reference :'.
      sy-msgv2 = ls_e1edk02-belnr.
      sy-msgv3 = 'and Booking reference No : '.
      sy-msgv4 = ls_xvbak-zblnr.
      RAISE user_error.
    ENDIF.
    CLEAR ls_xvbak.
  ENDIF.
ENDIF.
while i am testing for some idoc it is showing correct statues and some it was not showing correct states
some time i am getting correct messag Sales Order already exists for Invoice reference :'. ,for some IDOC  in BD87 i am getting Status was  invalid date
Please give suggestions and what should i do?
venkee.

Answer 1

Hi,
For line items which are related to another line item, this field contains the number of the partner document.
In the standard system the field is used for:
o  Credit memos which refer to a particular invoice item
o  Subsequent invoices for an invoice item
o  Partial payments for an invoice item
o  Partial clearings of down payments.
In the first two cases mentioned, the terms of payment are copied from the cross-referenced invoice item into the item currently being processed. This ensures that items due on the same date are paid together by automatic payment.
A special rule applies to credit memos which have a "V" in this field. The due date is determined in the same way as for an invoice. If the field is empty (containing neither a document number nor a "V") the due date is the baseline date for payment.
Reward if useful.