TR_INVOICE_INSERTONLY

        CREATE trigger TR_INVOICE_INSERTONLY on dbo.INVOICE after insert not for replication
          as begin
          begin try
            if not exists(
              select V.ID
              from INSERTED I
              inner join dbo.FINANCIALTRANSACTION F on F.ID = I.ID
                    inner join dbo.VENDOR V on V.ID = F.CONSTITUENTID
              where V.ALLOWTOCREATEINVOICES = 1)
            begin
              raiserror('Vendor has been marked ?Do not allow invoices?. You cannot create new invoices for this vendor.', 13, 1);
            end
          end try
                begin catch
                    exec dbo.USP_RAISE_ERROR;
                end catch
          end