Sitemap not listed
If a Sitemap isn't appearing on the Sitemaps page, check the following:
- Preferred domain. To Google, http://www.example.com and http://example.com are entirely different sites. So are http://example.com and https://example.com. Sitemaps you've submitted for the site http://example.com won't be visible in the Webmaster Tools page for http://www.example.com. To address this issue, make sure you've added all versions of your site, and then tell Google your preferred domain.
- Was your Sitemap submitted by someone else? Sitemaps you've submitted are visible on the By me tab of the Sitemaps page. If the Sitemap you're looking for isn't visible, click the All tab.
- Was your Sitemap submitted using ping or robots.txt? Only Sitemaps submitted using Webmaster Tools are listed on the Sitemaps page. To make sure your Sitemap information is visible, it's a good idea to use Webmaster Tools to submit your Sitemap for the first time, and then use ping or robots.txt to update it.