To ensure the security of your data, the Cloud Messaging Queue MQTT version has enhanced the security of its OpenAPI and console. The upgrade pertains to certain management APIs that use custom RAM permission policies. That is, if you've only configured instance permissions with your custom RAM policy without setting the corresponding API permissions, it is essential that these permissions be configured as soon as possible. Please review whether your scenario falls within the mentioned scope of impact, and timely add the specified OpenAPI permissions for OnsMqtt's OpenAPI parts to prevent any potential impact on data flow. If you are unable to access instances through the console, add the necessary MqttMeta permissions to the sub-accounts.

Newly registered customers are already supported by the new management method by default. For customers who have been using the service prior to May 2024, Alibaba Cloud will progressively implement upgrades from June 18th to September 30th.

We apologize for any inconvenience this may bring. Should you have any questions, please contact technical support for the Cloud Messaging Queue MQTT Version. The DingTalk group number is 35228338.