I have submitted my IP PIN several times. I even had the IRS mail my pin to me. However, Turbo Tax keeps telling me the IRS is rejecting my pin. What can I do next?

[DoninGA]

Did you enter the 6 digit IP PIN using this procedure?

To enter, edit or delete a 6 digit IP PIN

Click on Federal Taxes (Personal using Home and Business)
Click on Other Tax Situations
Scroll down to Other Return Info
On Identity Protection PIN, click the start button

[DawnC]

Make sure you are not confusing the IP PIN (6 digits assigned by the IRS and mandatory) and the Self-Select Pin (5 digits, chosen by you, not required if you have prior year AGI).    

Is my Self-Select PIN the same as my IP PIN?  No.

Can I reuse last year's IP PIN?  No.                           

How do I add or remove my 6-digit IP PIN?