Sitemaps are stale for up to one day and cached for 30 days. For context, "stale for one day" means that regardless of how many times you try to load the sitemap, we won't recreate the list more than once a day (so you're consistently stale by at most 24 hours). "Cached for 30 days" means that after 30 days without loading the sitemap, it disappears. Afterwards, when you visit the sitemap, you'll get a special message that says "please wait while we generate the sitemap." Then, when it's generated, you can refresh the page, and you'll get the new list.
If your data was created recently, we recommend waiting 24 hours to see if the sitemap updates and recreates the list.
