Need to block update duplicate manufacturing no

Dear All,

Need to block duplicate manufacturing no.

First user will create Serial no and after that update manufacturing no using Serial No management setup.

Now i unable to track object type  ('21','20','26','22','23','25','106')

but unable to track object type at that form.

So please let me know which object type should  track in SP_Transaction Notification.

Thanks

Manvendra