I earn commission from a business which they issued me a T4A .What will be my business name , and it keeps giving me an error of rental or business address.what do I report ?

You can use your own name & address, along with a fiscal period of 01/01/2021 to 31/12/2021. You can look up the industry code using one of the methods on this Statistics Canada website: North American Industry Classification System (NAICS) Canada 2022 Version 1.0

You don’t need to fill out any other information if it doesn’t apply to you.