Same for 301. After massive fixes of 404 errors that have been replac by 301, uploading a sitemap with these URLs helps spiders pick them up and assimilate them.
When performing a deindexing update with meta-robots, uploading the sitemap can also help spe up its reading.
Uploading an AMP URL sitemap is not
Standard and is not “necessary” in theory, but in some cases where indexing of AMP pages gets stuck, it has been very helpful.
It is not good to create errors in our sitemaps but to validate the blocking of URLs in large lists we can also upload a sitemap with all the URLs that should be block on the site and see that, inde, the validator gives us errors when these are block.
And well, in short
It helps us to check or try to spe up indexing after our updates on the web. Whenever we want the spiders to weigh atypical sites that normally take them a while to go through, an increase can get them going. It will never be excessively fast but it loan database will help to prevent it from taking forever.
As I was saying, if we add this point
To the previous one, by which we can upload sitemaps.xml to a client in our own domain, we have an indexing control system that does not affect can i have a euro? the development of the website and that will provide us with the extra that we ne at certain times.
Conclusion
Sitemaps are files that are not very well look after by many SEOs. As they are easy to define and do not pose any major complications beyond obtaining the tg data actual list of URLs, for many the work ends there. Even as we said at the beginning, it is an area that many people end up taking so little care of that they do more harm than good.