Sitemap lists a URL that redirects
What this means
The sitemap points at an address that immediately forwards somewhere else. Google follows it, but every hop costs crawl budget and the file is now describing a URL the site no longer serves.
How to fix it
List the destination URL directly. If the sitemap is generated, make it emit final URLs rather than whatever path the routing layer happens to accept.
Fix effort
This check needs a developer fix: it turns on a routing, hosting or infrastructure decision that no automatic edit can make safely.
Authoritative source
https://developers.google.com/search/docs/crawling-indexing/sitemaps/build-sitemap
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