Good question! There could be several possible reasons for this. For example, if you were assigned an IP Pin by the IRS due to a past issue with fraud, you would need to enter that IP PIN in TurboTax under "Other Situations." If you were assigned an IP PIN and didn't know the number, then you would need to either mail in your tax return, or use one of two options to retrieve it. The IRS provides a specific telephone number and webpage tool to access your IP PIN. To access this tool, you can google this search string, "get ip pin irs"
However, TurboTax would tell you this in the error message, so that may not be the reason. In my experience, TurboTax usually gives a more specific reason why the return was rejected. I hope you get the answer that solves your problem!
