Thanks to Martin Holmes's assistance, offline, the issue has been resolved.
A very public and emphatic thanks!
From: TEI (Text Encoding Initiative) public discussion list [mailto:[log in to unmask]]
On Behalf Of Hayim Lapin
Sent: Tuesday, August 11, 2015 1:13 PM
To: [log in to unmask]
Subject: Schema issue--Human stupidity (mine) check.
I am working on an ODD producing (for now) relax ng with embedded schematron instructions.
I seem to have accidentally disallowed the attribute @ana for all elements everywhere and I can't figure out how.
There are people I can ask to look at the actual schema docs but before I do, I thought I would ask whether there is an obvious place I should be looking at where I might have done this.