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Microservices Engine:BindSentinelBlockFallbackDefinition

Last Updated:Aug 28, 2026

Binds a fallback behavior definition to a Sentinel traffic protection rule.

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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

mse:BindSentinelBlockFallbackDefinition

update

*GovernanceApplication

acs:mse:{#regionId}:{#accountId}:namespace/{#Namespace}/application/{#AppName}

None None

Request parameters

Parameter

Type

Required

Description

Example

AppName

string

Yes

Application name.

spring-cloud-a

Namespace

string

Yes

Microservice namespace.

prod

FallbackId

integer

Yes

Fallback behavior ID. 0: default behavior.

21

TargetType

string

Yes

Rule type of the target resource.

Valid values:

  • 1 :
  • 2 :
  • 4 :
  • 6 :
  • 11 :

1

Resource

string

Yes

Resource name to which the rule applies. Must match the interface name shown in the console.

/a

AcceptLanguage

string

No

Response language. Valid values:

  • zh: Chinese

  • en: English

zh

Response elements

Element

Type

Description

Example

object

Message

string

Response message.

OK

RequestId

string

Request ID.

4E9FDCFE-0738-493B-B801-82BDFBCB****

Data

boolean

The returned data.

true

Code

integer

Status code. 200 indicates success.

200

Success

string

Whether the request succeeded. Valid values:

  • true: The request was successful.

  • false: The request failed.

true

HttpStatusCode

integer

HTTP status code.

200

Examples

Success response

JSON format

{
  "Message": "OK",
  "RequestId": "4E9FDCFE-0738-493B-B801-82BDFBCB****",
  "Data": true,
  "Code": 200,
  "Success": "true",
  "HttpStatusCode": 200
}

Error codes

HTTP status code

Error code

Error message

Description

400 IllegalRequest Invalid request:%s Invalid request: %s
400 InvalidParameter Parameter error:%s Request parameter error: %s
500 InternalError Console error. Try again later:%s Console error. Try again later: %s
403 NoPermission You are not authorized to perform this operation:%s You do not have the permission to use this interface:%s
404 NotFound Not found:%s The resource does not exist:%s

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.