301 error page has permanently moved to a new location.

All above information is meaningful for us. I agree with all.

301 is the permanent redirection of webpage to another webpage.

If you have to change the URL of a page as it is shown in Google results, I Suggest that you use a server-side 301 redirect. This is the best technique to make sure that users and Google are directed to the correct page. The 301 status code means that a page has permanently moved to a new location.