I'm having the same issue with trying to efile Turbo Tax Business return in the state of Maryland.
Error prompt is: "The Intuit Electronic Filing System is having difficulty recognizing the data in the return you are sending. Make sure your TurboTax program is up-to-date. Go to the Online menu and select Check for Updates. If you still can't transmit your return, go to www.support.turbotax.com for a solution or workaround. In some cases, you may need to file this return by mail. - Tax Year 2021 transmissions are not available. - TurboTax Business is not ready to process Tax Year 2021 for this return." There's also no error codes listed either. At first glance is seems all MD forms are available as well required for a typical Partnership LLC? Correct me if I am wrong.
