I was just checking all of the returns I've put on extension, by printing database reports for Extension

Imagine my surprise when 2 of the returns (including mine) threw an error "Unable to setup ef acceptance letter. No applicable efilings found"

Which is strange, because  the e-file activity report for both shows US - efile complete for Federal extension.

There's a submission ID in the e-file activity report, but I'd sure like to print it out in the letter.

Any ideas?