I had exactly this problem and so did some other users.   There was a recent update to the software that fixed it.  Are you using the CD/download?    Check for updates and update your software.   After two rejections, once I had the update in, my return was accepted within minutes.

When I log on to Turbo Tax it tells me that updates are available. I update each time but my returns are still rejected.

I forgot to mention I use the CD downloaded to my Mac.

Aughhhhhh!    There was a bug that was affecting those of who had the same amounts in box 1 of some 1099R's---even though the money had come from different accounts etc. and they fixed it--- or seems like they fixed it.   Have you completely exited from the program and relaunched it to put in the updates?   You might have to call customer support for more help--if they can help.

 

To call TurboTax customer support

https://ttlc.intuit.com/questions/1899263-what-is-the-turbotax-phone-number

Customer support is available from 5 a.m. to 9 p.m. Pacific time

 

 

 

This is a copy/paste of the email they sent to me recently when they fixed this:   Maybe it will help you.

 

 

There’s an update on the TurboTax help article you’re following: "Why am I getting a 1099-R Duplicate rejection error message when my 1099-R's aren't duplicated?".

 

We’re happy to inform you that we’ve updated TurboTax and resolved the issue you experienced

 

If you’re using TurboTax Online, it’s been updated automatically. Just sign in and you can continue working.

 

If you’re using the TurboTax CD/Download Software, download and install the latest update. You can do this through the prompt when you launch the software or by following these instructions.

 

If you’re still having trouble or there’s anything else we can help you with, feel free to give us a call.

 

 

 

 

 

And....I am on a Mac too using Big Sur.

@bummeriii Oh.... and one more trick to try if you still have no luck.   There was a long thread going with other users who were having this same duplicate 1099R problem and some of them worked around it by going to one of the so-called "duplicate" 1099R's and adding a penny to the box 1 amount.   Somehow that tricked the software into letting it go through without looking like a duplicate, and by the time the IRS rounds off the penny, who cares.   I did not resort to trying that, but others said it worked for them.   Good luck---hope you get your return to e-file!

I want to thank xmasbaby0 for the help. I finally got the returns accepted.