---
title: "Changes the number of Compute Nodes that are assigned to a Pool."
method: POST
path: "/pools/{poolId}/resize"
tags: ["Pools"]
---

# Changes the number of Compute Nodes that are assigned to a Pool.

`POST /pools/{poolId}/resize`

You can only resize a Pool when its allocation state is steady. If the Pool is
already resizing, the request fails with status code 409. When you resize a
Pool, the Pool's allocation state changes from steady to resizing. You cannot
resize Pools which are configured for automatic scaling. If you try to do this,
the Batch service returns an error 409. If you resize a Pool downwards, the
Batch service chooses which Compute Nodes to remove. To remove specific Compute
Nodes, use the Pool remove Compute Nodes API instead.

## Path parameters

- `poolId` string, required

## Query parameters

- `api-version` string, required
- `timeOut` integer

## Headers

- `client-request-id` string
- `return-client-request-id` boolean
- `ocp-date` string, date-time-rfc7231
- `If-Modified-Since` string, date-time-rfc7231
- `If-Unmodified-Since` string, date-time-rfc7231
- `If-Match` string
- `If-None-Match` string

## Response `202`

The request has been accepted for processing, but processing has not yet completed.

## Other responses

- `default` — An unexpected error response.

---

[API](https://skmtc.net/azure/apis/batch-batch.md) · [All operations](https://skmtc.net/azure/apis/batch-batch/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/azure/batch-batch/versions/8427acd8fd77/schema)