OnsTopicDelete - ApsaraMQ for RocketMQ - Alibaba Cloud Documentation Center

Deletes a topic.

Operation description

Note API operations provided by Alibaba Cloud are used to manage and query resources of Alibaba Cloud services. We recommend that you integrate these API operations only in management systems. Do not use these API operations in the core system of messaging services. Otherwise, system risks may occur. - After you delete the topic, the publishing and subscription relationships that are constructed based on the topic are cleared. Exercise caution when you call this operation.

You can call this operation to delete a topic when you need to reclaim the resources from the topic. For example, after an application is brought offline, you can delete the topics that are used for the application. After you delete a topic, the backend of ApsaraMQ for RocketMQ reclaims the resources from the topic. The system requires a long period of time to reclaim the resources. After you delete a topic, we recommend that you do not create a topic that uses the same name as the deleted topic within a short period of time. If the system fails to delete the specified topic, troubleshoot the issue based on the error code.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer.

Debug

Authorization information

The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

Operation: the value that you can use in the Action element to specify the operation on a resource.
Access level: the access level of each operation. The levels are read, write, and list.
Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
- The required resource types are displayed in bold characters.
- If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
Condition Key: the condition key that is defined by the cloud service.
Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.

Operation	Access level	Resource type	Condition key	Associated operation
mq:DeleteTopic	Write	All Resources *	none	none

Request parameters

Parameter	Type	Required	Description	Example
Topic	string	Yes	The name of the topic that you want to delete.	test
InstanceId	string	Yes	The ID of the instance to which the topic you want to delete belongs.	MQ_INST_188077086902****_BXSuW61e

Response parameters

Parameter	Type	Description	Example
	object
RequestId	string	The ID of the request. This parameter is a common parameter. Each request has a unique ID. You can use this ID to troubleshoot issues.	4189D4A6-231A-4028-8D89-F66A76C1****

Examples

Sample success responses

JSONformat

{
  "RequestId": "4189D4A6-231A-4028-8D89-F66A76C1****"
}

Error codes

For a list of error codes, visit the Service error codes.

Change history

Change time	Summary of changes	Operation

No change history

Delete a topic in the console

You can also delete a topic in the ApsaraMQ for RocketMQ console. For more information, see Manage topics.