If you made RRSP contributions prior to March 2, 2023 and did not show them on a previous year's tax return, they are not included on your Notice of Assessment from CRA. You cannot enter these contributions on your 2023 tax return; instead, you must adjust the appropriate year's tax return to show the contribution.
Since you made your contribution on January 6, 2023, this must be reported on your 2022 tax return.
