Updated at: 2022-04-11 GMT+08:00
What Are the Requirements for an SMN Topic Name?
- A topic name can contain 1 to 255 characters, including letters, digits, hyphens (-), and underscores (_).
- Each topic name in an account must be unique.
- After a topic is created, SMN generates a topic URN composed of the service name (SMN), region name, project ID, and topic name to uniquely identify the topic. When you call an API to create a topic, a topic URN will be returned. The URN will be used whenever a publisher or subscriber performs operations relating to the topic.