The error “Submitted URL has crawl issue” indicates that you submitted a URL through your XML sitemap, and Google encountered crawl issues when requesting it.
It’s one of the least helpful errors in the Index Coverage report, as it’s basically a catch all for crawl issues that don’t fit other issue types.
What causes crawl issues and how to fix them?
There are numerous causes for Google to encounter a crawl issue when requesting your URL, but oftentimes the issues are only temporary in nature and either go away on their own or are classified in one of the other issue types upon being rechecked by Google.
Try fetching some of the URLs listed in this report yourself using Google’s URL inspection tool to see if you can replicate the issue.
Example: Google requests were being blocked
In the Twitter thread below, Ryan Jones mentions that none of Google’s crawler were able to access a URL. If Google’s requests are getting blocked before the web server is reached, it would probably go into the “Submitted URL has crawl issue” bucket.
so this last client didn't give us access to GSC so It made it harder to diagnose. but when I realized pagespeed, lighthouse, structure data, and mobile friendly tools all said they couldn't access it, there was a problem.— Ryan Jones (@RyanJones) May 14, 2019
Persistent crawl issues
If these crawl issues are persistent and keep popping up, you need to investigate further. We recommend analyzing your website using ContentKing to analyze the request and response headers and full body snaphosts to get to the bottom of this.
These crawl issues may be holding back your SEO performance.
Let us check your website, and start fixing these issues right away!