How to prevent Duplicate AP Invoices ??

Question

hi Experts
End user Raised Po for 1000 quantities but good receipt Po comes one time 100,2nd time 200 ,3time 300 and so on...in between invoice raised for 100 ,2time 200 ... against GRPO..in between End user miss understand or communication some Duplicate bills are raised...
how i restrict duplicate postings??
note:(im using sap b1 2007 pl 17)
  Thanks & Regards
     AKR

Answer 1

Hi
Try this Stored Procedure in Test Environment.
if (@object_type = '20' or @object_type = '18')
     and (@transaction_type= 'A' or @transaction_type= 'U')
begin
     declare @venno as varchar(100)   
     if @object_type = '20'
     begin
          select @venno = NumAtCard
          from opdn
          where docentry =@list_of_cols_val_tab_del
          if 1 != (select count(docentry) from opdn with(nolock) where NumAtCard = @venno)
          begin
               select @error = 1
               select @error_message = 'Duplicate vendor ref no in PO Receipts. ! '
          end
     end
     else
     if @object_type = '18'
     begin
          select @venno = NumAtCard
          from opch
          where docentry =@list_of_cols_val_tab_del
          if 1 != (select count(docentry) from opch with(nolock) where NumAtCard = @venno)
          begin
               select @error = 2
               select @error_message = 'Duplicate vendor ref no in AP Invoices. ! '
          end
     end
end
With Regards
Balaji Sampath