---
title: "POST /updateReplicationSet"
method: POST
path: "/updateReplicationSet"
---

# POST /updateReplicationSet

`POST /updateReplicationSet`

Add or delete Regions from your replication set.

## Request body

- object
  - `actions` UpdateReplicationSetAction[], required — An action to add or delete a Region.
    - `addRegionAction` object — Details about the Amazon Web Services Region that you're adding to the replication set.
      - `regionName` string, required — The Amazon Web Services Region name to add to the replication set.
      - `sseKmsKeyId` string — The KMS key ID to use to encrypt your replication set.
    - `deleteRegionAction` object — Details about the Amazon Web Services Region that you're deleting to the replication set.
      - `regionName` string, required — The name of the Amazon Web Services Region you're deleting from the replication set.
  - `arn` string, required — The Amazon Resource Name (ARN) of the replication set you're updating.
  - `clientToken` string — A token that ensures that the operation is called only once with the specified details.

## Response `204`

Success

- UpdateReplicationSetOutput

## Other responses

- `480` — ThrottlingException
- `481` — ResourceNotFoundException
- `482` — AccessDeniedException
- `483` — ValidationException
- `484` — ConflictException
- `485` — InternalServerException

---

[API](https://skmtc.net/aws/apis/ssm-incidents.md) · [All operations](https://skmtc.net/aws/apis/ssm-incidents/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/aws/ssm-incidents/versions/18d598f1fa32/schema)