8 Reasons Google Not Indexing Pages If They Are In Sitemap.xml

1. Image URLs in Sitemap.
2. Duplicate URLs in your Sitemap.
3. Data is out of date.
4. Pages that are undervalued by Google.
5. pages that are orphaned.
6. crawling problem on your website.
7. Pages being hit by a duplicate content filter.
8. Pages in your XML Sitemap that are excluded by robots.txt or meta noindex tags.