The IRS computers determined that the IP PIN you entered was not valid.
You should have a letter from the IRS with your IP PIN and use information from that letter.
How to retrieve your IP PIN online You may use this Get an IP PIN online tool to retrieve your current IP PIN. https://www.irs.gov/identity-theft-fraud-scams/retrieve-your-ip-pin The IRS requires you to register and verify your identity in order to use the tool. This process is essential to protect your personal and tax information.
If a dependent or qualifying person listed on your return has ever received an IP PIN, a CP01A notice, or opted into the IRS's IP PIN pilot program, that person's special 6-digit IP PIN needs to be on the return to validate their identity for e-filing.
Please see the TurboTax FAQ below for more information: