Daharpa, you are correct, see table 4 if you scroll down at the link below. You are in excess contributions if your contributions from contributions in the tax year (until Dec. 31) + your unused contributions exceed your RRSP deduction limit for that year.
The warning that UFILE gives you goes against the documentation from the CRA.
https://www.canada.ca/en/revenue-agency/services/forms-publications/publications/t4040/rrsps-other-registered-plans-retirement.html#P2144_51601