---
title: "Update Concurrency Limit V2"
method: PATCH
path: "/api/v2/concurrency_limits/{id_or_name}"
tags: ["Concurrency Limits V2"]
---

# Update Concurrency Limit V2

`PATCH /api/v2/concurrency_limits/{id_or_name}`

## Path parameters

- `id_or_name` union, required — The ID or name of the concurrency limit
  - string, uuid
  - string

## Headers

- `x-prefect-api-version` string

## Request body

- ConcurrencyLimitV2Update — Data used by the Prefect REST API to update a v2 concurrency limit.
  - `active` boolean
  - `name` string
  - `limit` integer
  - `active_slots` integer
  - `denied_slots` integer
  - `slot_decay_per_second` number

## Response `204`

Successful Response

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.dev/prefecthq/apis/untitled-api.md) · [All operations](https://skmtc.dev/prefecthq/apis/untitled-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/prefecthq/untitled-api/revisions/a7958ce57e96/schema)