This can be confirmed by selecting Form Submission Errors in the Crawl Results filter criteria.
If you access a page that has a form submission error, you will see an error message.
AeyeScan detects these and other error messages and determines that it is a form submission error.
You can check for errors in the following ways
Scan Details or Scan List>Hamburger Menu>Check Crawl Results>Filter Criteria>Select Form Submission: Error and click the Apply Filter button.