Modifies a specified topic category.


Each Alibaba Cloud account can run a maximum of 50 queries per second (QPS).

Note RAM users of an Alibaba Cloud account share the quota of the account.


OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates the sample code of the operation for different SDKs.

Request parameters

Parameter Type Required Example Description
Action String Yes UpdateProductTopic

The operation that you want to perform. Set the value to UpdateProductTopic.

Operation String Yes PUB

The operation that devices can perform on the topic category. Valid values:

  • SUB: Subscribe
  • PUB: Publish
  • ALL: Publish and Subscribe
TopicId String Yes 821****

The ID of the topic category that you want to modify.

TopicShortName String Yes resubmit

The custom level that is used in the topic category. By default, a topic category includes the following levels: _productkey_ and _devicename_. Separate the two levels with slashes (/). Format of a topic category: productKey/deviceName/topicShortName .

Note Each level can contain letters, digits, and underscores (_), and cannot be empty.
IotInstanceId String No iot_instc_pu****_c*-v64********

The ID of the instance. This parameter is not required for public instances. However, the parameter is required for the instances that you have purchased.

Desc String No resubmit a test topic

The description of the topic category. The description must be 1 to 100 characters in length.

In addition to the preceding operation-specific request parameters, you must specify common request parameters when you call this operation. For more information, see Common request parameters.

Response parameters

Parameter Type Example Description
Code String iot.system.SystemException

The error code returned if the call fails. For more information, see Error codes.

ErrorMessage String A system exception occurred.

The error message returned if the call fails.

RequestId String FCC27691-9151-4B93-9622-9C90F30542EC

The ID of the request.

Success Boolean true

Indicates whether the call was successful.

  • true: The call was successful.
  • false: The call failed.


Sample requests
&Desc=resubmit a test topic
&<Common request parameters>

Sample success responses

XML format


JSON format


Error codes

For a list of error codes, visit the API Error Center.