Get your taxes done using TurboTax

I encountered this issue this evening while correcting my federal return that had an error. I noticed a screen the first time I was submitting my Iowa return as a non-resident that said I would be required to physically sign and mail my return, so I was guessing that would be the form I need to print. But then TT charged me a fee to e-file and I received the error message that has been mentioned in this thread. I have checked the filing instructions page and I am not required to send anything else according to that page. I've attached a screenshot of the error message. Just wanted to flag that this is still an issue.