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ApsaraMQ for MQTT:ActiveCaCertificate

Last Updated:Dec 19, 2025

ApsaraMQ for MQTT supports device verification using X.509 certificates. A certificate authority (CA) certificate is required to issue and validate these device certificates, and it must be active to be used. While CA certificates are active by default upon registration, this operation allows you to reactivate any certificate that has become inactive.

Operation description

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

  • You can call this operation up to 500 times per second per Alibaba Cloud account. If you want to increase the limit, join the DingTalk group (ID: 35228338) to contact ApsaraMQ for MQTT technical support.

  • You can call this operation to reactivate only CA certificates that are registered with ApsaraMQ for MQTT brokers. You can call the ListCaCertificate operation to query CA certificates that are registered with an ApsaraMQ for MQTT instance.

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Test

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:ActiveCaCertificate

none

*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 to which the CA certificate is bound.

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

Sn

string

Yes

The serial number of the CA certificate that you want to reactivate. The serial number is the unique identifier of a CA certificate.

The serial number of a CA certificate cannot exceed 128 bytes in size.

007269004887******

Response elements

Parameter

Type

Description

Example

object

The response parameters.

RequestId

string

Public parameters, each request ID is unique and can be used for troubleshooting and problem localization.

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

Sn

string

The serial number of the activated CA certificate, used to uniquely identify a CA certificate.

007269004887******

Examples

Success response

JSON format

{
  "RequestId": "020F6A43-19E6-4B6E-B846-44EB31DF****",
  "Sn": "007269004887******"
}

Error codes

HTTP status code

Error code

Error message

Description

400

ParameterFieldCheckFailed

Failed to validate the parameters. The parameters may be missing or invalid.

500

ParameterFieldCheckFailed

Failed to validate the parameters. The parameters may be missing or invalid.

500

FindCaBySnError

Failed to find the CA by the SN. Please check sn is valid.

500

MqttInstanceNotFound

Specified instance is not found

403

PermissionCheckFailed

Failed to verify API permissions.

ram permission check failed

403

MqttOwnerCheckError

Failed to validate the instance permission

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.