A typed external identifier. Use 'system' to namespace identifiers and prevent collisions across jurisdictions and organisations

Required fields
value

Fields

FieldTypeReqDescription
systemstringNamespace URI or name identifying the issuing authority or system. Use URN format where possible for unambiguous identification
typestringHuman-readable type label describing what kind of identifier this is
valuestringThe identifier value itself. Format depends on the system — may include hyphens, spaces, or check digits as appropriate

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