Your XML sitemap can still list property pages that you have deleted, and those URLs now return 404 errors.
Why this happens. Rank Math caches the sitemap, so trashing a property does not always clear that cache automatically.
How to fix it.
- In WordPress, go to Rank Math > Sitemap Settings and click Save Changes. Rank Math regenerates the sitemap and the trashed URLs drop out.
- Empty the property trash so the posts do not linger.
- Open /property-sitemap.xml and check that only live listings appear.