How to change the previous years tax return

[x_m_z1]

I need to change the Statement of Real Estate Rentals for the previous two years since I forgot the separate the land cost from the building cost for the CCA purpose. There will be no tax dollar payment or refund involved. Only the amount change of CCA.

What is the easiest way to change it? Can I change it in CRA My Account, or refile the tax return online,  or I have to mail it?

[TurboTaxSusan]

You can make changes to your previous years’ tax return either through the Canada Revenue Agency (CRA) or in TurboTax through ReFILE: https://turbotax.community.intuit.ca/community/tax-return-amendment/help/i-have-filed-my-tax-return-...