This EventType is defined in OPC 10000-3. Its representation in the AddressSpace is formally defined in Table 40.

Table 40 – AuditCertificateUntrustedEventType definition

Attribute		Value
BrowseName		AuditCertificateUntrustedEventType
IsAbstract		True
References	NodeClass		BrowseName	DataType	TypeDefinition	ModellingRule
Subtype of the AuditCertificateEventType defined in 6.4.12, which means it inherits the InstanceDeclarations of that Node.
Conformance Units
Auditing Connections

This EventType inherits all Properties of the AuditCertificateEventType. Their semantic is defined in 6.4.12. The SourceName for Events of this type shall be "Security/Certificate". The Message Variable shall include a description of why the certificate is not trusted. If a trust chain is involved then the certificate that failed in the trust chain should be described. There are no additional Properties defined for this EventType.