Is there anything wrong with this sitemap?

Question

I am having trouble with google sitemaps as follow:

Your Sitemap or Sitemap index file doesn't properly declare the namespace.

Your Sitemap or Sitemap index file doesn't declare the expected namespace: http://www.sitemaps.org/schemas/sitemap/0.9 Parent tag: urlset Tag: url

The sitemap as discussed: http://kampar4rent.com/sitemap/

Any ideas what may be wrong?

Additional Note:

I have tested validation of the xml with this tool and no errors were found:

http://www.xmlvalidation.com/

Somewhere with similar issue: another SO question

Answer 1

Is this the error:

Your Sitemap or Sitemap index file doesn't declare the expected namespace: http://www.sitemaps.org/schemas/sitemap/0.9 Parent tag: urlset Tag: url

Well, it says what you're supposed to do: remove xmls from the url tag