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    Server Load Balancer:ModifyLoadBalancerPayType

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    Server Load Balancer:ModifyLoadBalancerPayType

    Last Updated:Mar 18, 2026

    Changes the billing method of a Classic Load Balancer (CLB) instance from pay-as-you-go to subscription.

    Note

    This API has been deprecated with no replacement. While temporary access is maintained, no further updates or bug fixes will be provided. To ensure continued functionality, plan your migration and contact your account manager for support.

    Operation description

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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

    slb:ModifyLoadBalancerPayType

    update

    *loadbalancer

    acs:slb:{#regionId}:{#accountId}:loadbalancer/{#loadbalancerId}

    		 None None

    Request parameters

    Parameter

    Type

    Required

    Description

    Example
    RegionId

    string

    Yes

    The ID of the region where the CLB instance is deployed.

    You can query the region ID from the Regions and zones list or by calling the DescribeRegions operation.

    cn-hangzhou
    LoadBalancerId

    string

    Yes

    The ID of the CLB instance.

    lb-bp1b6c719dfa08ex*****
    PayType

    string

    No

    The billing method of the CLB instance. Valid values:

    • PayOnDemand (default): pay-as-you-go

    To change the billing method of a pay-as-you-go CLB instance to subscription, you must set the parameter to PrePay. In addition, the previous billing method of the CLB instance must be PayOnDemand.

    PrePay
    PricingCycle

    string

    No

    The billing cycle.

    Valid values: year and month.

    Note

    This parameter is valid only when the PayType parameter is set to PrePay. This parameter is valid only for pay-as-you-go instances.

    month
    Duration

    integer

    No

    The subscription duration.

    • If PricingCycle is set to month, the valid values are 1 to 9.

    • If PricingCycle is set to year, the valid values are 1 to 3.

    Note

    This parameter is valid only when the PayType parameter is set to PrePay. This parameter is valid only for pay-as-you-go instances.

    1
    AutoPay

    boolean

    No

    Specifies whether to enable automatic payment. Valid values:

    • true: yes

    • false (default): no

    Note

    This parameter is valid only when the PayType parameter is set to PrePay. This parameter is valid only for pay-as-you-go instances.

    false

    Response elements

    Element

    Type

    Description

    Example

    object

    OrderId

    integer

    The order ID of the subscription CLB instance.

    20212961978891
    RequestId

    string

    The ID of the request.

    365F4154-92F6-4AE4-92F8-7FF34B540710

    Examples

    Success response

    JSON format

    {
  "OrderId": 20212961978891,
  "RequestId": "365F4154-92F6-4AE4-92F8-7FF34B540710"
}

    Error codes

    HTTP status code

    Error code

    Error message

    Description
    400 Operation.NotAllowed Cannot change internet payByTraffic loadBalancer from PayOnDemand to PrePay.
    400 OperationDenied.PayByCLCU The operation is not allowed because the instanceChargeType of loadbalancer is PayByCLCU.

    See Error Codes for a complete list.

    Release notes

    See Release Notes for a complete list.