SMN Operations Audited by CTS

After you enable CTS, whenever an SMN API is called, the operation may be recorded in a log file, which is then dumped to a specified OBS bucket for storage based on time and data changes.

However, if someone calls the SMN API to cancel a subscription without login, CTS will not record the operation. For example, if a subscriber clicks the link in an email to cancel the subscription, the API for unsubscribing is called, but CTS does not record the operation.

Table 1 lists the SMN operations that will be recorded by CTS.

**Table 1** SMN operations recorded by CTS
Operation	Resource Type	Trace Name
Creating a topic	topic	createTopic
Deleting a topic	topic	deleteTopic
Updating a topic	topic	updateTopic
Updating a topic policy	topic	updateTopicAttribute
Adding a subscription	subscription	subscribe
Deleting a subscription	subscription	delsubscribe
Creating a message template	message_template	createMessageTemplate
Modifying a message template	message_template	updateMessageTemplate
Deleting a message template	message_template	deleteMessageTemplate
Batch adding tags	tag	batchCreateTag
Deleting a tag	tag	deleteTag