According to the Financial Post there have been reports that CRA's autofill feature hasn't been adding all of the tax slips, meaning that some people may have under-reported income.
Technology is wonderful, but glitches happen. That's why we always double check before we hit file.
It's not a huge deal though. If you find you missed a slip while filing, just add it and refile.
Or contact 616 Executive and we'll take care of it for you.
Financial Post - Better Double Check Your Tax Return