Hello,
Thank you for contacting support.
That URL of the sitemap of the website should return a noindex
status code because you wouldn’t want to index the sitemaps from your website, but rather only the pages that are inside the sitemap.
That directive on the sitemap prevents it from appearing on SERPs but it doesn’t prevent Google from crawling the pages on it and indexing them.
If you test any sitemap, even from big websites you’ll see that all of them use this directive to be sure it’s not getting included on SERPs.
Even our own sitemap includes that:

To submit the sitemap to the correct place on GSC you should follow the steps in this tutorial: https://rankmath.com/kb/submit-sitemap-to-google/
As for the couldn’t fetch issue on GSC, that is not usually because the website is inaccessible but rather because it has not been processed yet from Google.
Your domain is very recent so this will take time to process.
Don’t hesitate to get in touch if you have any other questions.
Does this issue occurs if domain is new? I dont have to worry about sitemap couldn’t fetch issue?
Hello,
We tried to check your sitemap but your website URL is returning a 503 error. We suggest you fix this error first so that we can check your sitemap further.
Meanwhile, please try to follow the steps below and see if that works for you:
1. Flush the Sitemap cache by following this video screencast:
https://i.rankmath.com/pipRDp
2. Exclude the Sitemap files of the Rank Math plugin in your caching plugin. The cache could be via a plugin or from the server. For plugins or Cloudflare, please follow this article:
https://rankmath.com/kb/exclude-sitemaps-from-caching/
Once done, clear your website cache, remove all the submitted sitemap, and resubmit only the /sitemap_index.xml
in the Search Console.
If the issue persists, please try to follow this guideline for further troubleshooting: https://rankmath.com/kb/couldnt-fetch-error-google-search-console/
Let us know how it goes. Looking forward to helping you.
Thank you.
Same issue face when I publish new blog on my marine living website can this method well work on my site?
same issue cam on my site, and there is no chance of new website and old website, i think this is something in your plugin issue, because I know a plugin if you install that one then sitemap show approved (i didnot want to advertise here) please help to solve this issue
Hello @easyexcel,
You can open a new ticket and provide more details on the issue you are facing on your site, so we can provide personalized support.
We look forward to helping you.
Thanks.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.