Existing non sef url

Hi,

We'll need more information to be able to help you.
I don't see what is the problem with that URL ?
And that URL is SEFed contrary to what you said.
The non SEF equivalent URL of that page would be demo.hikashop.com/index.php?option=com_h...product&task=listing and you should be able to access that same URL on your website too since that's the URL calling the controller/task responsible for displaying a listing of products. But since you don't specify the Itemid parameter in the URL, the listing has no settings to base itself on.

Hi,

Well, yes and no.
First, the fact that this page doesn't display any content is just a matter of configuration. If you set the "sub element filter" setting of the HikaShop configuration to "all sub elements" you will see a listing of all your products there.
Second, if you configure the "canonical URL" setting of your main category to point elsewhere on your website (like for example the main menu of your shop), then search engines that would end up on that page would not index it and so no one will access that page even though it's there and working.
But is that a problem ?
For example, on your website, you have that link too :
demo.hikashop.com/index.php/en/component/finder/search
That's the "smart search" page. You'll be able to access that page even if you don't have the smart search system configured and can't search anything with it. But as long as you don't add a menu item pointing to it, then no one will access it.
And you have tens of other pages like that on a Joomla website, wether you have HikaShop or not. For example, another one:
demo.hikashop.com/index.php/en/component/wrapper
The point I'm trying to make here is that it's not an issue in HikaShop. It's how the Joomla URL routing system is made which allows you to access these pages even though they do nothing.