For this reason, I'm going to direct you towards our Support team so you can proceed with successfully NetFiling your return.
We are not aware of any NetFile errors with the HBP repayment. Please check your entries and ensure your RRSP contribution (if you made one) is entered and the amount you wish to "designate" does not exceed it. When checking this, you should click directly on the RRSP Profile and ensure both boxes "Made RRSP contributions" and "Repayment or withdrawals for the Home Buyers Plans" are checked before continuing.
When you reach the Home Buyer's Plan Profile page, also make sure the box "Designate an amount as a Home Buyers' Plan repayment" is checked. After verifying the amount you wish to designate as a Home Buyers' Plan repayment is correct, you should be able to successfully NetFile.
We're aware of the issue and have a fix scheduled for this week. In the meantime, you can click the Skip Error button to proceed in your return.
It's been a few weeks and still the error persists, and I cannot Netfile while it is still there. Yes my repayment amount is correct based on my notice of assessment, and yes I did not designate any RRSP contributions made in 2017 because there were none made in 2017. Any other ideas? I seem to be at an impasse.