Dynamic SLS Sitemap is a small and simple PHP script which dynamically creates an XML sitemap of the whole Joomla content structure everytime the Google Bot/Yahoo Slurp visits your website. This sitemap will work perpectly ONLY when your joomla using SH404SEF or Artio JoomSEF component for search engine friendly and all your joomla components have SEF extension.
Installation instructions: Unzip first. Simply upload the script (sitemap.php) into the root of your joomla site. Then log in to Google Sitemap (www.google.com/webmasters/sitemaps) or Yahoo! (https://siteexplorer.search.yahoo.com/) and feed a new web-sitemap with the URL to this script (example:
http://www.yoursite.com/sitemap.php).
Tips: Avoiding XML parsing error.
1. From SH404SEF control panel, delete all 404 logs.
2. From SH404SEF configuration>advanced, set log 404 errors = no.