[achoice]

15 years ago I worked with integrating services via IBM WebSphere Message Broker. Big companies needed help mapping EDIFACT messages to/from other formats. Interesting at first, mapping hell after a while. Quite interesting format, see https://en.m.wikipedia.org/wiki/EDIFACT And message specs https://service.unece.org/trade/untdid/d20b/trmd/trmdi2.htm

USA use X12, similar thing.