Hi Jannis
I was playing with the RSS feed for seo, as on this page: Sitemap, RSS Feed, and iTunes Podcast
My Poster 2 page is here:
https://www.smartsingers.org/previous-concerts/?feed=sitemap
I get an error when I submit it to a Feed Validator:
https://www.feedvalidator.org/check.cgi?url=https%3A%2F%2Fwww.smartsingers.org%2Fprevious-concerts%2F%3Ffeed%3Dsitemap
Sorry
This feed does not validate.
* [line 2](https://www.feedvalidator.org/check.cgi?url=https%3A%2F%2Fwww.smartsingers.org%2Fprevious-concerts%2F%3Ffeed%3Dsitemap#l2), column 0: Undefined root element: urlset [[help](https://www.feedvalidator.org/docs/error/UndefinedElement.html)]
> <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:xsi="http: ...
In addition, interoperability with the widest range of feed readers etc. etc.
I have submitted the feed to google search console, and it seems to work AFAIK, so I don’t know if the error is important or not.
Many thanks, as ever.
Fergus