Self Select PIN vs. IP PIN?

It looks like there are two different type of PINs when e-filing a tax return. I'd like to get some clarifications.

When e-filing with TurboTax (desktop version), which one I shall use?  I'm a fist time filer.  I got the rejection message "IND-031-04 - The primary taxpayer's AGI or Self-select PIN from last year does not match IRS records".  I e-filed again with AGI=0.  Still got rejected for the same reason.

 

I don't have Self-select PIN from last year.  According to https://www.irs.gov/e-file-providers/self-select-pin-method-for-forms-1040-and-4868-modernized-e-fil..., I should enter AGI 0 and leave the PIN blank.  But TurboTax won't allow me file if the PIN is blank.  How can I work around that?

 

If there is no way to work around the TurboTax software, I can only file the return by mail.  But how can I e-file next year if I don't specify a Self-select PIN this year?  Is there a way to specify that on paper?  If yes, which form?

 

According to IRS, e-filer may also use IP PIN.  Actually, if IRS assigned you an IP PIN, you'd have to use that.  According to the link the 2nd bullet point above:

If you file your return without your IRS assigned IP PIN:

  • We’ll reject your electronic return, and you won't be able to e-file
  • We’ll subject your paper return to additional screenings to validate your identity, delaying any refund you may be due

What would be the easiest way to do e-filing?  I don't want to apply for IP PIN if I don't have to.  But how can I work around the Self-select PIN chick-and-egg problem?  Thanks!

 

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