---
title: "POST /#Action=ModifyClusterSubnetGroup"
method: POST
path: "/#Action=ModifyClusterSubnetGroup"
---

# POST /#Action=ModifyClusterSubnetGroup

`POST /#Action=ModifyClusterSubnetGroup`

Modifies a cluster subnet group to include the specified list of VPC subnets. The operation replaces the existing list of subnets with the new list of subnets.

## Query parameters

- `Action` 'ModifyClusterSubnetGroup', required
- `Version` '2012-12-01', required

## Response `200`

Success

## Other responses

- `480` — ClusterSubnetGroupNotFoundFault
- `481` — ClusterSubnetQuotaExceededFault
- `482` — SubnetAlreadyInUse
- `483` — InvalidSubnet
- `484` — UnauthorizedOperation
- `485` — DependentServiceRequestThrottlingFault

---

[API](https://skmtc.net/aws/apis/redshift.md) · [All operations](https://skmtc.net/aws/apis/redshift/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/aws/redshift/versions/20d3543bb6e9/schema)