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Sitemap XML Is Malformed or Has Wrong Root Element

Sitemap XML is invalid or has an incorrect root element, preventing search engines from parsing it.

By Seoxpert Editorial · Published

Why it matters

Search engines like Google require sitemaps to be valid XML with a <urlset> or <sitemapindex> root. If the sitemap is malformed, it will be ignored, and the URLs inside won't be discovered or crawled efficiently, reducing your site's visibility in search results.

Impact

Search engines will not crawl or index URLs listed in a malformed sitemap, harming site discovery.

How it's detected

Automated crawlers fetch the sitemap URL and attempt XML parsing, flagging errors if the root element is not <urlset> or <sitemapindex>.

Common causes

  • •Server returns an HTML error page (e.g., 404 or 500) instead of XML at the sitemap URL.
  • •Build or deployment process appends extra data to the sitemap file.
  • •A template or script mistakenly concatenates multiple XML root elements.
  • •Incorrect routing or CDN configuration serves the wrong content type or file.

How to fix it

Open the sitemap URL in your browser or use a tool like curl to inspect the response. Validate the sitemap with an XML validator or xmllint. If you see HTML instead of XML, check your server, CDN, or routing configuration to ensure the correct file is served. Fix any build or template issues causing malformed XML or multiple root elements.

Code examples

Problem: Sitemap returns HTML instead of XML

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Error</title>
</head>
<body>
  <h1>404 Not Found</h1>
</body>
</html>

Correct: Sitemap with proper <urlset> root

<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
  <url>
    <loc>https://example.com/</loc>
  </url>
</urlset>

FAQ

Why does my sitemap return an HTML page instead of XML?

This usually means your server or CDN is serving an error page (like 404 or 500) at the sitemap URL. Check your routing and file existence.

What should the root element of a sitemap XML file be?

A sitemap must have either <urlset> or <sitemapindex> as the root element, depending on its type.

How can I validate if my sitemap is well-formed XML?

Use an online XML validator or run 'xmllint --noout <sitemap-url>' to check for well-formedness.

Will Google notify me if my sitemap is malformed?

Google Search Console may report sitemap errors, but malformed sitemaps are often silently ignored by crawlers.

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