It is not uncommon for a state to request additional information or request identity verification even after your return was accepted. If you receive a letter from the state, respond by providing IL with the information they want.
TurboTax is not informed by the state of IL that IL wants more --- this is between you and the state of IL now.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
