I appreciate you trying to help me out.
I've double-checked the partner code and it is correct. As I live in Québec there are two partner codes (one for feds, the other prov, and both are 0), and that's what I have entered in the respective boxes.
I actually have a second error message (in addition to the Box 116 and Box 118 issue) which tells me I am not permitted to enter "general business income (loss)" if I have a partner code of 0 and that I should have entered instead "limited partnership income (loss)". Regrettably this error message refers to Box 08 for the partner code bu