need help on URL

Hello all,
We have multi seller module, how to track the URL enter is valid from specified seller after the domain url example: www.DomainName.com/storename
when the "storename" entered behind the URL, and check from database is exist in my database table column,
I would like to redirect it to current home page instead of showing page not found.

I have check,
public_html/system/startup.php
public_html/system/engine/loader.php
public_html/index.php

However, I not able to find the way to check it. Any solution ?

Thanks.

It is hard to understand what you are after. But if i understood you correct you say that seo url doesnt work of domain.com/storename? and redirects you to 404 page. ? if this is the issue then you need to enable mod rewrite in your server and rename httaccess.txt in your root folder to .httaccess

You can use htaccess code to redirect 404 urls and use redirect for specific URL to Another URL through cpanel as well.