Hi again Mahesh
Thank you very much for your efforts.
I am not quite sure if I have been able to fully explain what I am looking for, so i will give it one more try.
I would like the not found message (similar to 404.php) to be displayed and responded (to users/crawlers) for all items not found on the site (pages, posts, archives,users), independent of which one it is.
I do hope this clarifies and that you are able to comment/propose solution.
Kind regards
Lars