You have your years wrong, we are filing 2022 now, not 2023. Last year NOA was the 2021 NOA.
Schedule 11 Line 4 states to enter CTC from latest NOA, which was 2021.
I did this and I get the same error.
I also had unused 2021 tuition fees, did anyone else get this error and had unused 2021 tuition fees.
