I am also getting this message. I found Form AZ-8879, E-file Signature Authorization is on the list of unsupported for e-file. What is the point of Authorizing e-file if it won't let you then e-file? However I looked at my previous year's return and the same form was generated and e-file was successful last year.
https://care-cdn.prodsupportsite.a.intuit.com/forms-availability/turbotax_az_online_individual.html
