AWS SDK Version 3 for .NET
API Reference

AWS services or capabilities described in AWS Documentation may vary by region/location. Click Getting Started with Amazon AWS to see specific differences applicable to the China (Beijing) Region.

Modifies the ID format for the specified resource on a per-Region basis. You can specify that resources should receive longer IDs (17-character IDs) when they are created.

This request can only be used to modify longer ID settings for resource types that are within the opt-in period. Resources currently in their opt-in period include: bundle | conversion-task | customer-gateway | dhcp-options | elastic-ip-allocation | elastic-ip-association | export-task | flow-log | image | import-task | internet-gateway | network-acl | network-acl-association | network-interface | network-interface-attachment | prefix-list | route-table | route-table-association | security-group | subnet | subnet-cidr-block-association | vpc | vpc-cidr-block-association | vpc-endpoint | vpc-peering-connection | vpn-connection | vpn-gateway.

This setting applies to the IAM user who makes the request; it does not apply to the entire Amazon Web Services account. By default, an IAM user defaults to the same settings as the root user. If you're using this action as the root user, then these settings apply to the entire account, unless an IAM user explicitly overrides these settings for themselves. For more information, see Resource IDs in the Amazon Elastic Compute Cloud User Guide.

Resources created with longer IDs are visible to all IAM roles and users, regardless of these settings and provided that they have permission to use the relevant Describe command for the resource type.


For .NET Core this operation is only available in asynchronous form. Please refer to ModifyIdFormatAsync.

Namespace: Amazon.EC2
Assembly: AWSSDK.EC2.dll
Version: 3.x.y.z


public virtual ModifyIdFormatResponse ModifyIdFormat(
         ModifyIdFormatRequest request


Type: Amazon.EC2.Model.ModifyIdFormatRequest

Container for the necessary parameters to execute the ModifyIdFormat service method.

Return Value

The response from the ModifyIdFormat service method, as returned by EC2.

Version Information

.NET Framework:
Supported in: 4.5, 4.0, 3.5

See Also