My return was rejected IND-452 saying I used the same TIN on an accepted return, however the IRS says they did not receive a return. What should I do?

@BoulderLEA you will have to paper file it. 

what the IRS is saying is that another tax return that they already accepted has that same TIN. 

Paper file it and they will figure it out. 

Thank you! Sounds like a good plan.

Still, I'm confused why the IRS would reject an e-file, with TurboTax indicating a return had been preciously filed with the same TIN. However, the IRS specified in a letter dated yesterday they have no record of a processed tax return. 

@BoulderLEA here is what I can share:

the IRS keeps a master file of SSN and ITIN.  Once someone / anyone submits a tax return using that number, it can't be used by someone else.  Could be accidental use of the same number, could be fraud.  It is one of the edits that the IRS efile system look at upon submission.  

That reject message is coming from the IRS - not Turbo Tax.  

The one thing I don't understand is why did you get a letter from the IRS.  If you hadn't previously submitted your taxes, there wouldn't be anything to prompt the IRS to send you a letter. 

Regardless, if you are getting a reject message because the SSN / ITIN has already been used, then the only way to submit the tax return is via paper.  The IRS will figure out the issue once they process that paper return.