TurboTax Business 2023 has a few issues, not just one. Here's the status as I see it:
For Form 1065 (Partnership) there is a Form 8453-PE (note the PE) for e-file signature, and that form worked for me, and I also had the WI state form included. That combination successfully e-filed on 2/16/24.
TT Bus also creates Form 1041 (Fiduciary, estate, trust), and the required signature Form 8453-FE (note the FE) is not available and up to last Friday was not even planned to be ready. The Support team has a request in to the programmers to fix this -- there is no for-sure promise to fix this that I have heard; I expect to hear a status update on this later this week.
So, e-file transmissions are not available for:
Form 8453-FE (but standby for news)
GA state (anticipated ready 3/1 per this forum) and maybe some other states that I'm not aware of.
