first, the student must file his own tax return for his income. He needs to check the box stating he CAN BE claimed as a dependent on someone else's tax return.
On your tax return, are you answering the questions correctly? You might want to delete the child and start over. once you answer he is a full time student, it shouldn't be asking about income.
And if you answer the income question as a 'no' to workaround the problem, TT may not ask about his AOTC (Form 1098T) and that would cause another problem.
