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    ApsaraMQ for MQTT:DeleteCaCertificate

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    ApsaraMQ for MQTT:DeleteCaCertificate

    Last Updated:Aug 28, 2026

    Deletes a certificate authority (CA) certificate from an ApsaraMQ for MQTT broker. CA certificates are used in X.509 certificate-based authentication to issue and validate device certificates.

    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.

    • This operation deletes only CA certificates registered with ApsaraMQ for MQTT brokers. To query registered CA certificates, call the ListCaCertificate operation.

    • Deleting a CA certificate automatically deletes all device certificates issued by that CA certificate and registered with the ApsaraMQ for MQTT broker.

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    Try this API in OpenAPI Explorer, no manual signing needed. Successful calls auto-generate SDK code matching your parameters. Download it with built-in credential security for local usage.

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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:DeleteCaCertificate

    delete

    *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 to delete. The serial number uniquely identifies a CA certificate.

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

    007269004887******

    Response elements

    Element

    Type

    Description

    Example

    object

    The response parameters.

    RequestId

    string

    The request ID.

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

    string

    The serial number of the deleted 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.
    400 MqttOwnerCheckError Failed to validate the instance permission
    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.

    See Error Codes for a complete list.

    Release notes

    See Release Notes for a complete list.