---
title: "Update Partition Count"
method: PATCH
path: "/clusters/{cluster_id}/topics/{topic_name}"
tags: ["Topic (v3)"]
---

# Update Partition Count

`PATCH /clusters/{cluster_id}/topics/{topic_name}`

[![Generally Available](https://img.shields.io/badge/Lifecycle%20Stage-Generally%20Available-%2345c6e8)](#section/Versioning/API-Lifecycle-Policy)

Increase the number of partitions for a topic.

## Request body

- UpdatePartitionCountRequestData
  - `partitions_count` integer, required

## Response `200`

The topic.

- TopicData
  - `kind` string, required
  - `metadata` ResourceMetadata, required
    - `self` string, required
    - `resource_name` string, nullable
  - `cluster_id` string, required
  - `topic_name` string, required
  - `is_internal` boolean, required
  - `replication_factor` integer, required
  - `partitions_count` integer, required
  - `partitions` Relationship, required
    - `related` string, required
  - `configs` Relationship, required
    - `related` string, required
  - `partition_reassignments` Relationship, required
    - `related` string, required
  - `authorized_operations` string[]

## Other responses

- `400` — Indicates a bad request error. It could be caused by an unexpected request body format or other forms of request validation failure.
- `401` — Indicates a client authentication error. Kafka authentication failures will contain error code 40101 in the response body.
- `403` — Indicates a client authorization error. Kafka authorization failures will contain error code 40301 in the response body.
- `429` — Indicates that a rate limit threshold has been reached, and the client should retry again later.
- `5XX` — A server-side problem that might not be addressable from the client side. Retriable Kafka errors will contain error code 50003 in the response body.

---

[API](https://skmtc.dev/confluentinc/apis/rest-admin-api.md) · [All operations](https://skmtc.dev/confluentinc/apis/rest-admin-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/confluentinc/rest-admin-api/revisions/e783c1a5e2bd/schema)