I don't know what year exactly I had made the allowable over-contribution for RRSP

[TurboTaxMary-Ann · Accepted solution]

If you are unsure of the year that you made an allowable over contribution to your RRSP, you can contact the Canada Revenue Agency at 1 800 959 8281 to retrieve this information.  Also, if you are registered for the My Account service on the Canada Revenue Agency website, you can log into your account to verify this information.