Google claims to automatically update sitemaps. However if you want to force Google to update it you may delete the old sitemap file. Add a new sitemap file with a different filename.
A site map is an XML file that lists Urls for a site along with additional metatags about each Url.Auto XML sitemap is automatically generating XML sitemap to
web location.
An XML sitemap is a file that helps Google and other major search engines better understand your website while crawling and auto xml sitemap is a document created automatically online.
XML site map always helps search engines to better understand the web-site crawling and Auto XML site map is automatically generating XML sitemap to web location.
To generate auto XML sitemap you just need to enter your website URL into "XML sitemap generator" tool. XML sitemap help search engine crawler to better understand your website.
Sitemaps are absolutely a requirement of any site that wants to be found and wants the best Google and Bing webmaster tools experience. This should definitely be a core feature.
Auto XML sitemap means sitemap is created automatically for your websites.
We can claim to google to automatic update sitemap which helps to define and list your website pages in a directory tree.