Optional$eventpart 5 - 6.4.10 AuditActivateSessionEventType
The ClientUserId identifies the user of the client requesting an action. The ClientUserId can be obtained from the UserIdentityToken passed in the ActivateSession call.
SecureChannelId shall uniquely identify the SecureChannel. The application shall use the same identifier in all AuditEvents related to the Session Service Set (AuditCreateSessionEventType, AuditActivateSessionEventType and their subtypes) and the SecureChannel Service Set (AuditChannelEventType and its subtypes).
part 5 - 6.4.7 AuditSessionEventType
OptionalsourceUserIdentityToken reflects the userIdentityToken parameter of the ActivateSession Service call. For Username/Password tokens the password should NOT be included.
ClientAuditEntryId contains the human-readable AuditEntryId defined in Part 3.