Troubleshooting sitemap indexing issues in Google Search Console

[CamilleRoux]

Only the sitemap_recent.xml is read by the Google Search Console when I add sitemap.xml to the sitemaps list. The other sitemap listed in sitemap.xml, sitemap_1.xml is never added to the Search Console.
Moreover if I add it manually, I got the error : “impossible the fetch the sitemap”.

[Jagster (Jakke Lehtonen)]

You should not add those sitemap_x. Those sub-sitemaps are told to googlebot in sitemap.xml

Take a look that index sitemap, then you realize idea of it.

[CamilleRoux]

Yes, I know (I did it just to debug), but when I add sitemap.xml, only sitemap_recent.xml is read. Why the other one is not read?