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Elastic Compute Service:ModifyVpcAttribute

Last Updated:Apr 27, 2026

Modifies VPC attributes, such as its name and cidr block.

Note

This API has been deprecated. We recommend migrating to Vpc(2016-04-28) - ModifyVpcAttribute for enhanced functionality and continued support. While the deprecated API remains temporarily accessible, no further updates or bug fixes will be provided.

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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

vpc:ModifyVpcAttribute

update

*VPC

acs:vpc:{#regionId}:{#accountId}:vpc/{#VpcId}

  • vpc:tag

None

Request parameters

Parameter

Type

Required

Description

Example

VpcId

string

Yes

The ID of the VPC to modify.

Description

string

No

The description must be 2 to 256 characters long. It must start with a letter and cannot begin with http:// or https://.

VpcName

string

No

The name must be 2 to 128 characters long, start with a letter, and can contain letters, digits, underscores (_), and hyphens (-).

CidrBlock

string

No

The primary IPv4 cidr block for the VPC. You can only expand this cidr block, for example, from 192.168.0.0/24 to 192.168.0.0/16. You cannot modify the primary cidr block if ClassicLink is enabled.

RegionId

string

No

The ID of the VPC's region.

UserCidr

string

No

A user cidr block to add to the VPC. You can add up to three user cidr blocks. They cannot overlap with the primary cidr block, each other, or the reserved 100.64.0.0/10 cidr block.

Response elements

Element

Type

Description

Example

object

The response object.

RequestId

string

The request ID.

Examples

Success response

JSON format

{
  "RequestId": ""
}

Error codes

HTTP status code

Error code

Error message

Description

400

InvalidDescription.Malformed

description not valid..

400

InvalidVpcName.Malformed

Specified VPC name is not valid.

The VPC name is invalid. Correct the name format and try again.

400

InvalidVpcDiscription.Malformed

Specified VPC description is not valid.

The specified VPC description is invalid.

400

InvalidParameter

Specified UserCidr invalid format.

The user CIDR block is invalid.

400

InvalidUserCidr.Quota

Specified UserCidr number is greater than 3.

400

InvalidUserCidr.Malformed

Specified UserCidr overlapping in of 100.64.0.0/10.

400

InvalidRegion.Malformed

Specified RegionNo is not invaild.

400

IllegalCidrBlock

Some subnet cidrBlock is not in the cidrBlock.

400

InvalidCidrBlock.Malformed

Specified CIDR block is not valid.

The specified CIDR block is invalid.

400

ParamExclusive.EnableIpv6AndCidrBlock

EnableIpv6 and CidrBlock is mutually exclusive.

400

OperationFailed.ClassicLinkEnabled

Operation failed because classicLink is enabled.

400

InvalidVpcId.NotFound

Specified VPC does not exist.

404

InvalidVpcId.NotFound

Specified VPC does not exist.

The specified VPC ID does not exist.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.