Help Center > > FAQs> What Are the Requirements for an SMN Topic Name?

What Are the Requirements for an SMN Topic Name?

Updated at: Dec 29, 2021 GMT+08:00

A topic name can contain 1 to 255 characters, including letters, digits, hyphens (-), and underscores (_). Each topic name in a user 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. A URN will be used whenever a publisher or subscriber performs operations to a topic.

Did you find this page helpful?

Submit successfully!

Thank you for your feedback. Your feedback helps make our documentation better.

Failed to submit the feedback. Please try again later.

Which of the following issues have you encountered?

Please complete at least one feedback item.

Content most length 200 character

Content is empty.

OK Cancel