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ApsaraMQ for MQTT:ListDeviceCertificate

Last Updated:Aug 27, 2026

Queries all device certificates registered with a specified ApsaraMQ for MQTT instance. Device certificates are digital certificates issued by certificate authority (CA) root certificates for client authentication and encrypted communication between clients and brokers.

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.

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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:ListDeviceCertificate

list

*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 whose device certificates you want to query.

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

PageNo

string

Yes

The page number to return. Pages start from 1.

2

PageSize

string

Yes

The number of entries per page. Valid values: 1 to 100.

10

Response elements

Element

Type

Description

Example

object

Schema of Response

RequestId

string

The request ID. You can use it for troubleshooting.

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

Data

object

Query result.

Total

integer

Maximum number of pages in the query result.

1

PageNo

integer

The current page number.

2

PageSize

integer

The number of entries per page.

10

DeviceCertificateVOS

array<object>

Details of the device certificate.

object

ValidBegin

string

The time when the device certificate takes effect. The value is a Unix timestamp in milliseconds.

1654137303000

ValidEnd

string

The time when the device certificate expires. The value is a Unix timestamp in milliseconds.

1969497303000

DeviceSn

string

The serial number (SN) of the device certificate. The SN uniquely identifies a device certificate.

356217374433******

DeviceContent

string

The content of the device certificate.

\n represents a new line.

-----BEGIN DEVICECERTIFICATE-----\nMIIDuzCCAqdGVzdC5jbi1xaW5n******\n-----END DEVICECERTIFICATE-----

Status

string

The status of the device certificate. Valid values:

  • 0: inactive.

  • 1: active. This is the default status after the device certificate is registered.

1

CaSn

string

The serial number (SN) of the CA certificate to which the device certificate belongs. The SN uniquely identifies a CA certificate.

00f26900ba87******

DeviceName

string

The name of the device certificate.

mqtt_device

Examples

Success response

JSON format

{
  "RequestId": "020F6A43-19E6-4B6E-B846-44EB31DF****",
  "Data": {
    "Total": 1,
    "PageNo": 2,
    "PageSize": 10,
    "DeviceCertificateVOS": [
      {
        "ValidBegin": "1654137303000",
        "ValidEnd": "1969497303000",
        "DeviceSn": "356217374433******",
        "DeviceContent": "-----BEGIN DEVICECERTIFICATE-----\\nMIIDuzCCAqdGVzdC5jbi1xaW5n******\\n-----END DEVICECERTIFICATE-----",
        "Status": "1",
        "CaSn": "00f26900ba87******",
        "DeviceName": "mqtt_device"
      }
    ]
  }
}

Error codes

HTTP status code

Error code

Error message

Description

400 ParameterFieldCheckFailed Failed to validate the parameters. The parameters may be missing or invalid.
400 MqttOwnerCheckError Failed to validate the instance permission
500 ParameterFieldCheckFailed Failed to validate the parameters. The parameters may be missing or invalid.
500 FindDeviceBySnError Failed to find the device certificate by the SN. Please check sn is valid
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.