This EventType is defined in OPC 10000-3. Its representation in the AddressSpace is formally defined in Table 48.

Table 48 – AuditUpdateEventType definition

Attribute		Value
BrowseName		AuditUpdateEventType
IsAbstract		True
References	NodeClass		BrowseName	DataType	TypeDefinition	ModellingRule
Subtype of the AuditEventType defined in 6.4.3, which means it inherits the InstanceDeclarations of that Node.
Conformance Units
Auditing History Services
Auditing Write

This EventType inherits all Properties of the AuditEventType. Their semantic is defined in 6.4.3. The SourceNode Property for Events of this type shall be assigned to the NodeId that was changed. The SourceName for Events of this type shall be "Attribute/" and the Service that generated the event (e.g. Write, HistoryUpdate). Note that one Service call may generate several Events of this type, one per changed value.