AOM 1.4 - Archetype.uid a UUID or OID?

Thomas Beale thomas.beale at
Wed Jun 14 16:09:52 EDT 2017

Bert picked up an anomaly in this PR 
<> that I think should 
probably be fixed. ARCHETYPE.uid is of type UUID in the AOM2 spec, but 
of type HIER_OBJECT_ID in the AOM1.4 spec (the latter type is the 
openEHR type for OIDs). However it appears that all ADL1.4 archetypes 
that have a uid have it as a Guid (i.e. UUID), and I assume the various 
tools do as well. We avoid Oids like the plague in openEHR, and I am not 
aware of them being used anywhere.

If we can verify that everything assumes a UUID for this field, then the 
spec is wrong, and we should update it from 1.4.2 to 1.4.3, i.e. treat 
this as an error correction.

Could tool makers check this issue and report here?


- thomas

Thomas Beale
Principal, Ars Semantica <>
Consultant, ABD Team, Intermountain Healthcare 
Management Board, Specifications Program Lead, openEHR Foundation 
Chartered IT Professional Fellow, BCS, British Computer Society 
Health IT blog <> | Culture blog 
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