HOW TO RESTRICT DUPLICATION OF ITEMCODE IN PURCHASE ORDER

Question

Hi to all,
In PO, we can select same item for a single document.
Is there any work around solution to restrict the duplication of item in PO.
Thanks in Advance,
Sagar

Answer 1

hi Istvan Koros,
Thanks for ur reply.
Can u explain me what is "23" (line 6).
line 1 IF @transaction_type IN (N'A', N'U') AND (@Object_type = N'22')
line 2 BEGIN
line 3 declare  @line int
line 4 set @line=-1
line 5 set @line=(SELECT T0.LineNum+1 FROM POR1 T0
line 6  WHERE T0.DocEntry =23
line 7   and exists(select linenum from por1
line 8            where docentry=T0.DocEntry and itemcode=T0.Itemcode
line 9                and linenum<T0.LineNum) )
line 10 If @line<>-1
line 11 begin
line 12 SET @error = 10
line 13 SET @error_message = N'Duplicate item: line '+
line 14  CONVERT(nvarchar(4),@line) + '!'
line 15 end
line 16 END
Which parameter i should pass it the SP.
SAGAR