That code is for a missing IP PIN which should be entered on the paper return you file by your signature however the return will process without it. If you were issued an IP PIN by the IRS last year then watch for the new one to come in the mail for use on any returns filed in 2023.
https://ttlc.intuit.com/turbotax-support/en-us/help-article/rejected-tax-return/fix-e-file-reject-in...
