My Individual 401K 1099-R lists Payer's TIN and Recipient's TIN as the same number and Turbotax will not accept?"

[dmertz]

TurboTax is correct, the Payer's TIN must be the business's EIN, not your SSN.  For your individual 401(k) to prepare any Forms related to the plan, you are required to have an EIN for your business and that's the TIN that should be listed as that Payer's TIN.  If your business does not have an EIN, you must obtain one for the business and obtain a corrected Form 1099-R showing the EIN of the payer.