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ApsaraMQ for MQTT:GetRegisterCode

Last Updated:Aug 28, 2026

Obtains the registration code of a specific certificate authority (CA) certificate. When you register a CA certificate with an ApsaraMQ for MQTT broker, you must upload the validation certificate of the CA certificate to verify whether you have the private key of the CA certificate. The validation certificate must be generated by using the registration code of the CA certificate.

Operation description

  • Only ApsaraMQ for MQTT Enterprise Platinum Edition instances support this operation.

  • Each Alibaba Cloud account can call this operation up to 500 times per second. To request a higher limit, join DingTalk group 35228338 to contact ApsaraMQ for MQTT technical support.

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RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

  • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

  • API: The API that you can call to perform the action.

  • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

  • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

    • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

    • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

  • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

  • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

mq:GetRegisterCode

get

*Instance

acs:mq:{#regionId}:{#accountId}:{#InstanceId}

None
  • mq:MqttInstanceAccess

Request parameters

Parameter

Type

Required

Description

Example

MqttInstanceId

string

Yes

The ID of the ApsaraMQ for MQTT instance.

post-cn-7mz2d******

Response elements

Element

Type

Description

Example

object

The response parameters.

RequestId

string

The request ID.

020F6A43-19E6-4B6E-B846-44EB31DF****

RegisterCode

string

The registration code of the CA certificate.

13274673-8f90-4630-bea1-9cccb25756ad2089******

Examples

Success response

JSON format

{
  "RequestId": "020F6A43-19E6-4B6E-B846-44EB31DF****",
  "RegisterCode": "13274673-8f90-4630-bea1-9cccb25756ad2089******"
}

Error codes

HTTP status code

Error code

Error message

Description

400 MqttOwnerCheckError Failed to validate the instance permission
500 ParameterFieldCheckFailed Failed to validate the parameters. The parameters may be missing or invalid.
500 MqttInstanceNotFound Specified instance is not found
403 PermissionCheckFailed Failed to verify API permissions.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.