Greetings, Apologies if I missed a discussion about this, but as per http://www.openehr.org/releases/RM/latest/docs/common/common.html#_unique_node_identification
"LOCATABLE descendants may have a *uid*, containing a GUID" The optional/recommended nature of uid makes it impossible to implement some features that I have in mind because I can't rely on all implementations to follow the same approach. However I realise that making it mandatory could introduce compatibility issues with existing data so it is not simply making a decision and putting it into specs. Has this been discussed anywhere? All the best Seref
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