How to restrict reference entered in the NumAtCard field from duplicating

Question

Hi guys,
Is there a way to prevent the repetition or duplication of reference number manually entered by the user? Do you have a script or a stored procedure for this?
Thanks,
Yvette

Answer 1

Use this Stored Procedure for A/P Invoice
Try in Test Environment and then in Live Database.
if @object_type = '18'
and (@transaction_type = 'A' or @transaction_type = 'U')
begin
declare @venno as varchar (100)
declare @vennam as varchar (100)
if (@object_type = '18')
begin
select @venno = NumAtCard, @vennam = CardCode from OPCH T0 where docentry = @list_of_cols_Val_tab_del
begin
if (@venno is not null)
begin
if 1!= (select count (docentry) from OPCH with (nolock)where (NumatCard = @venno) and (cardcode = @vennam))
begin
select @error = 10
select @error_message = 'Duplicate Vendor Ref Number!'
End
End
End
End
End
Regards,
Bala