TurboTax developers have apparently failed to recognize that Roth IRAs inherited from a decedent dying before 2020 or Roth IRAs inherited by an Eligible Designated Beneficiary, are subject to annual RMDs, and have failed to implement the RMD questions for distributions from inherited Roth IRAs. As long as any RMD of the inherited Roth IRA was satisfied, there is no need to be concerned about this omission from TurboTax's programming.
TurboTax only knows as the amount of RMD that you are required to take from what you tell TurboTax that you are required to take. If TurboTax thinks that you have failed to complete an RMD, somewhere you have told TurboTax an amount of RMD that you were required to take. Since TurboTax fails to ask about RMDs for inherited Roth IRAs, it seems that you would have to have entered this during the entry of some other Form 1099-R that has nothing to do with a Roth IRA. Make sure that when asked how much RMD you were required to take that you do not include any RMDs required of any inherited Roth IRAs.
