For the last several years, perhaps longer, I always get a CRA NETFILE warning concerning schedule 3 (indicate if you disposed of a property that was owned for less than 365 days). Under the principal residence section under income & expenses I always do not check the Sale of principal residence box because I have not sold any property. So why is it always asking me to check schedule 3. I have seen some saying that you just need to go to the schedule 3 and check the no option. However to me, that gives the impression that I sold/disposed of a property that was owned for more than 365 days. If I did not indicate that I sold or disposed of any property then schedule 3 isn't relevant. Sending me a warning is just confusing. If this is an error then please correct it.