Care to share what "right architecture" could look like? There's surprisingly little public engineering reading about EDI...

Mentioned elsewhere in the thread, but it's possible to parse the (mostly) machine readable specs for EDIFACT messages to create schemas for reading massages.

A library that I wrote decades ago has some Perl which can do that to produce XML definitions from the UN/EDIFACT published directories. I hope that it can be useful to others: https://github.com/davidcoles/medici