My spouse is self employed and has T4A slips but not a business. We cannot Netfile with out fixing the missing business info.

Hi!

Typically self-employed/independent contractors receive a T4A with box 48 filled out for fees for services. As your spouse is self-employed, in the eyes of CRA she is seen as carrying on a business and if box 48 is filled out on her T4A she would need to fill out T2125 for the missing info.