suhail wrote: What should I fill in here for products and for category?
Well, it's all explained here in the link I already gave you:
www.hikashop.com/support/documentation/i...roduct-form.html#seo
A valid URL for the product or category or else. Which one exactly this is only you know. To find out, you could also configure the respective SEF option to "Use canonical URL and generate it if missing" and load the product in the frontend for the system to auto-fill the canonical URL.
Again, the documentation explains it well, I'd say.