A1 Sitemap Generator calculates all priority values based on internal linking in your website... So that is one solution. It has a 30 days fully functional free evaluation.
It's quite simple. Google sent you a warning, most probably because one of your links were not found. Open the file sitemap.xml (or whatever you've called it), with a text editor, correct or erase the wrong entry and resubmit it to google. Be carefull, google webmasters tools have some problems. Sometimes it says it is ok after submission, and some days ago, warnings appears while the sitemap is crawled. Anyway, it's not a very user friendly application. Try: http://www.webrickco.com/buildsitemap.php and tell me what you think about it.
No , i got another 7 errors for the links from my sitemap that was not found. But this really concerns me : Again , how do i fix it?
Taken from sitemaps.org This is what a sitemap.xml file looks like <url> <loc>http://www.example.com/</loc> <lastmod>2005-01-01</lastmod> <changefreq>monthly</changefreq> <priority>0.8</priority> </url> Code (markup): Notice the <priority>0.8</priority> Google is stating all of yours are the same. Open the sitemap.xml file in notepad or whatever. Change the number on that line. Valid values range from 0.0 to 1.0. This value does not affect how your pages are compared to pages on other sites—it only lets the search engines know which pages you deem most important for the crawlers. The default priority of a page is 0.5. Also, please note that assigning a high priority to all of the URLs on your site is not likely to help you Sitemaps.org For more info on this http://www.sitemaps.org/protocol.php Code (markup):
Is there any reason in particular my answer does not satisfy? If you do not want to use A1SG to calculate proper values, then either leave out the priority tag or set the values manually...?
Please read carefuly http://www.google.com/schemas/sitemap/0.84/sitemap.xsd before you go on with a sitemap submission. The only mandatory tag is <LOC>. If all url inside the LOC tag are available and with no errors, you won't get any warning or error. If you don't want to deal with the <priority> tag, just don't put any and let google tools decide for you. By default, all priorities will be set to 0.5.