Yes you have to mention that in Schedule A point D. Check for your selfprashant. said:Guys
in 2011 &2012 i had got rejection for canadian student visa application ..
i havent mentioned tht in my forms..
did i had to mention that ???
http://www.cic.gc.ca/english/pdf/kits/forms/IMM5669E.pdf
If you haven't then you don't have to worry about it. Once you receive AOR from Local VO send them amended Schedule A along with cover letter explaining you forgot to mention it.
It wont lead to rejection. Just make the necessary changes and send them once you receive AOR. There will be email address given to you at end of AOR for future updates to your application. So just send them Amended Schedule A. It doesnt have to be original, so make changes, sign it, scan it & email it to them.