I am wondering how this solution tackles the duplicate page problem that we have reported via the ticket system whereby google is indexing and reporting as duplicates some department pages with page numbers so high that they don't actually exist with products on them (and have never existed).
These pages don't return 404 errors (they say "Sorry your search resulted in no matches") but don't have any products on them. How/why google has indexed these is a complete mystery but we just need google to drop them.
For example I look at broughtons.demostore.nitrosell.com/store/department/9/home-accessories/page30000.html
I see I have
link rel="prev" href="http://broughtons.demostore.nitrosell.com/store/department/9/home-accessories/page29999.html"
link rel="next" href="http://broughtons.demostore.nitrosell.com/store/department/9/home-accessories/page30001.html"
link rel="canonical" href="http://broughtons.demostore.nitrosell.com/store/department/9/home-accessories/page30000.html"
I can't see how this will tell google that this page should not be indexed. The real last page in the series for this department is Page 6, so why does page 30000 have a prev and a next and a canonical of itself?
Won't this potentially cause me more duplicate problems if google then crawls page 30001, then page 30002 etc.....
Wouldn't it be better for non existent page numbers on departments and categories to return 404 errors? I see that if you try and access a brand with an irrelevant page number it returns a 404 which seems like the best solution.