In my case, there were some issue of my 401k distribution due to job change, which ended up with "mail-file only", although I already paid Turbotax efile fee ev...
I had same issue and made phone call to Turbo tax. After 2 hours-long screen sharing, they said there is no way to file through efile in this case and gave me t...
It seems like being not able to efile. I need to file by mail.
https://ttlc.intuit.com/questions/4699879-error-form-1040-line-12b-elective-deferrals-to-qualifi...