Why do I get the message that tuition transfer amount from my son is 0.00 when I paid over $2000 and entered it on his return as a transfer?

Please review how tuition transfer must be completed - first on your sons return he must enter that he would like to transfer a specific amount to you- Click here

Then to see how to enter it on your return click here. 

Here is more information on how much of the tuition credit can be transferred over.