CTT Audit Event Test |OPC UA Standard|Forum|OPC Foundation

Hello

I currently used CTT Testing Audit Event,but CTTs behavior seems strange

To clearify where went wrong,I only use AuditSession Event and AuditActivateSession Event

When CTT runs test,CTT will received many types events,but most of them were not send from my opcua server.

I checked what CTT received AuditActivateSession Event, number of Event fields was not correct,also I checked its value,were not correct neither

I have also set Event NodeID,when CTT triggers Event Node,my opcua server will emit AuditActivateSession Event,but I checked CTT Test Script,there is no triggering Event Node Id

I also use uaExpert to check if there goes wrong with my server when my server sends AuditActivateSession Event

Every Event field is correct,and value also

I also created a opcua client to monitor server if server emits Event,and my client can received AuditActivateSession Event

And Event filed is correct,there are some value not correct because I did not deal its type correctly,but its behavior is correct

According to specification of OPCUA 

If server clams having audit event,when securechannel established server should emit SecureChannel Event and SecureChannelOpen Event

Seesion Event as well when Session created

Is there something I misunderstood about Audit Event?

belows link include CTT Audit Event Test Log. pictures for uaExpert and My opcua client to receive Audit Event

https://drive.google.com/file/.....sp=sharing

Thanks