Check the Michigan Forms Availability. Typically, the federal return and the state return are both rejected.
For returns that have the federal accepted and the state rejected, the state may include pages that are unsupported for e-filing. In that event, the state return could be mailed in. TurboTax will provide thorough instructions for paper filing if needed.
It is a best practice to send the return by certified mail which proves via a special receipt that it was mailed and notifies you when it was delivered.
Check your email for a notification and explanation from TurboTax.
Log in to your TurboTax Online program and click Fix my return. For additional support and a short video click How do I fix a rejected return? This link includes the most common rejection codes from the IRS.