IND-043-01 e-file error
If checkbox 'PowerOfAttorneySignedByInd' is checked in the return, then checkbox 'PersonalRepresentativeInd' must not be checked. (rule IND-043-01)
You'll get this error if you're filing a return that includes Form 2848, Power of Attorney, for a deceased taxpayer.
Solution
You'll need to paper file the return with Form 8948 according to IRS e-File specifications.