I'm trying to designate an amount of repayment (the annual minimum required payment) for my homebuyers repayment plan, however, I keep getting an error message saying "You can't designate unused RRSP contributions made in (2023) or before, or designate contributions that you make to your spouse or common-law partner's RRSPs or specified pension plan (SPP), as repayment for HBP and/or LLP."

Any ideas how to fix this?