Revisit your T3 and other T-slips. You can also check from the 'Forms Method'. There will be a self-employment income in a form with the amount. Go where you input that amount.
In my case, it was T3 - Box 26 which is supposed to be declared, however, NOT Communal income. I changed the dropdown from communal - yes to Communal - NO! and went and netfile without any issues.
like if it resolved!
-ParthPatel
