Error Pages With Bot Hits
What does this report contain?
Pages which return a 400, 404, 410, 500, or 501 that had requests from bots within the the Log Summary files included in the crawl.
How can this report be used?
Search engines are unable to index error pages, if they are crawling them this may be an indication that they were expecting the URL to exist. URLs with a high amount of bot requests should be investigated.