Fix the invalid attribute value error

Sitemaps with XML content, such as standard XML files or Atom XML feeds, use a variety of tags, values, and attributes. As an example, the following sample code is an Atom feed, where href is considered an attribute.

 rel="alternate" type="text/html"
href="http://www.example.com/index.html"/>

You would see the invalid attribute error if the href attribute is set to the following URL, which has one forward slash (/) less than in the first example:
href="http:/www.example.com/index.html"
Once you have fixed the attribute value, you can re-submit your sitemap.