What is Canonical issue in SEO?
 

I want to know about canonical issue. Please provide me detail with some examples.

Canonical issue is of duplicate pages, if by chance your site 2 page same content and different urls but you can't redirect it so their using canonical tag. Canonical tag using in head section on your site.

Canonical is a tag which is placed in duplicate page issue like I have two pg A and B but by mistake A's content got repeat in B the I will insert canonical tag in page B. So that Google's crawler should move away by seeing canonical tag

All above answer are correct. Canonical is just like a Content Duplicacy. If you want to ignore Duplicate Content issue, you have to use Canonical Tag. With help of this tag, you can rank your Canonical Page also.

Canonical issue is of duplicate pages, if by chance your site 2 page same content and different urls but you can't redirect it so their using canonical tag. Canonical tag using in head section on your site.

Nice Information !

thank you so much...

Canonical Issue is that different URLs pointing towards the same keyword.

Canonical issue is nothing but when on a site you post same content for different url. But not redirect, at that place canonical issue arise. To remove this issue use Canonical tag in head section.

Also Canonical Pages can get rank in Search Engine.