Note: I'm a user and not from TT.
Many states are not yet updated in TT so perhaps that is what you are referring to.
For example, I'm still waiting for NY.
But that should not interfere with federal which mostly works (see below).
To test and learn, I used TT Deluxe (download) and also the online self employed version.
If you have a downloaded version, make sure you are internet connected so that it can update.
If you are not talking about your state return (ie your issue is with federal), the software completes the 8915-E for you. It does work (and I just now tried on both Deluxe and Online) although I had a weird experience as getting the correct results (what went into line 4b on the 1040) depended on the order I entered the 1099-Rs (I had 4 and only one was taken due to a COVID hardship). But, that's a separate issue.
You only need to enter each 1099-R and answer the questions as they relate to each. Answering ALL of those questions correctly is key to getting the desired results. The only error you might get (as of today) is that it cannot e-file because the state forms aren't ready yet.
If you are getting a specific error for the federal 8915-E, I can only suggest you delete your 1099-Rs and start over because as long as your software is updated, it does work.
