What does he want

We’re now requiring unique, non-generic names for all new submissions before we can proceed. In addition to this author’s cannot use names that are already on Market Place. Search and make sure that chosen name does not exist: https://themeforest.net/

Example only: Business is not unique, changing it to XBusiness, BusinessX is still not unique enough.

More resources:

Friend is way too generic!

It looks like he wants a unique name that doesn’t already exist.