if there are two sibling nodes in a template that have the same archetype ID and the same name (or unconstrained), then the template will not be accepted by the system

[ppazos]

https://discourse.openehr.org/t/aom-how-do-you-differentiate-between-sibling-c-object-if-both-are-archetype-root-and-have-the-same-archetype-id/3013/6