Well, I guess nobody had the courage to fill in X above so here is latest as of 2/25/22.
The TurboTax desktop update now says 1116 Schedule B will NOT be supported for e-file.
Form 1116 Sch B, Foreign Tax Carryover Reconciliation Schedule
Print: 03/31/2022
E-file unsupported
Poke around a bit on the internet and you can find alternatives which are much less expensive. Here is one from this forum.
https://ttlc.intuit.com/community/tax-credits-deductions/discussion/2021-form-1116-schedule-b-carryo...
