Http error: 421 – Misdirected Request
A 421 status code is an error that occurs when a server misdirects a request. This can happen for a number of reasons, but usually it’s because the server is overloaded or there is a problem with the network.
The relevancy of the 421 status code in SEO is that it can cause your website to be unavailable to users. This is because the 421 status code indicates that the server is not able to handle the request. If your website is not available to users, it will not be able to rank in search engines.
An example of a 421 status code is if you try to access a website and you get a “server unavailable” error message.