I discovered this thread after running into the same issue with foreign pension income in HR Block software: just like TurboTax, it required me to fake a 1099-R, including a bogus TIN, to get the software to e-file the return (fyi the 99-0999999 suggested earlier in this thread worked for HR Block software.)
But like some other commenters above, I'm wasn't satisfied with filing a bogus TIN, or the alternative of filing as Line 8 "Other income", so I started Googling for other options.
I came across a thread that said TaxACT could handle foreign pensions without using a fake 1099-R. So I tried that, and confirmed that TaxACT does indeed have an income category called "Foreign Pension Distribution" that does exactly what we all want: it accepts the input without requiring a tax id, and it puts the income on the pension line, while still allowing e-filing. Looking behind the scenes, I can see that the software created a worksheet they call "Form FEC", which stands for "Foreign Employer Compensation and Pensions" that is specifically designed to handle this situation.
I already paid for my 2022 HR Block software, but decided to eat that sunk cost, and switched to TaxACT because of this issue.
