Paste your XML Sitemap URL(s). Typically the URL can be found in your websites Robots.txt file or may be found at www.yourdomain.com/sitemap.xml
Step 3: Add Code To 404 Template
Add your projects unique JavaScript code to the <head > of your 404 template. Voila! You should now start being redirected after landing on any 404 page, to the closest similar live landing page.
Tip: You can view redirect mappers performance within Google Analytics Source / Medium report.