On several of the state specific e-file authorization forms along with the generic 8879-SO, the client information does not map to the PDF and must be input manually. It would be nice to have this information populated as it is on the Federal 8879-TE. For the generic 8879-SO, all fields other than Part I could be filled in (keep that as user input). This list may not be complete, but this has been noted on:
8879-SO
MS - MS8453-C
VA VA-8879C