I am using the latest version of Keylimetie sitemap and after uploading the XML if I try to validate on
http://www.w3.org/2001/03/webdata/xsv it gives me an error. When I investigated the problem in more detail I found that the header xml of your application is generated below.
<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
<url>...
Instead it should be like below
<urlset
xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9
http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd">
<url>...
Can you please modify the source of your application for such a small change so I don't have to manually modify the sitemap every time?