The review warns nil tuition can be transferred to a parent's return, even though the student return shows a carryforward amount of $4K. Can the 4K be transferred?

Do I ignore the turbo tax warning message that nil is available for transfer?  The carryforward amount is less than the $5K maximum that can be transferred.  Is this a turbo tax error?  The carryforward is for tuition paid in 2018 for the 2018 school year.  There are no amounts from prior years.