Check technical availability
Open the final URL, response code, and redirect chain. Check robots.txt, meta robots and X-Robots-Tag. No-crawling and no-indexing do different things: a crawl-blocked URL prevents the crawler from reading noindex on the page. It is important to see the public response, not the signed-in view.
Continue with: Canonical URLs: check consistency across the site.
Look for conflicting signals
Compare declared canonical, canonical page chosen by Google, sitemap and internal links. If all the links point to a different URL variant, just having the address in the sitemap won't fix the problem. For language pages, check content and alternate links.
Continue with: Sitemap maintenance: canonical URLs and accurate dates.
Review the content and request another check
If there are no technical obstacles, check that the page has its own content, is different from others and is accessible through logical internal links. After correction, use the available revalidation tools. An indexing request and sitemap help with discovery, but do not guarantee inclusion in the index or positions.
Continue with: Internal links: connect articles, services and case studies.
Do I have to resubmit the URL every day?
It does not replace the elimination of the cause. First, capture the problem and fix, then monitor the state change and the date of the last crawl.