---
title: "POST /v1/projects/{projectsId}/regions/{regionsId}/operations/{operationsId}:cancel"
method: POST
path: "/v1/projects/{projectsId}/regions/{regionsId}/operations/{operationsId}:cancel"
tags: ["projects"]
---

# POST /v1/projects/{projectsId}/regions/{regionsId}/operations/{operationsId}:cancel

`POST /v1/projects/{projectsId}/regions/{regionsId}/operations/{operationsId}:cancel`

## Request

- Base URL: `https://dataproc.googleapis.com`
- URL: `https://dataproc.googleapis.com/v1/projects/{projectsId}/regions/{regionsId}/operations/{operationsId}:cancel`
- Auth: one of:
  - OAuth 2 and OAuth 2
    - Implicit: `https://accounts.google.com/o/oauth2/auth`
    - Scopes: `https://www.googleapis.com/auth/cloud-platform`
    - Authorization code: `https://accounts.google.com/o/oauth2/auth`
    - Token URL: `https://accounts.google.com/o/oauth2/token` scopes: `https://www.googleapis.com/auth/cloud-platform`
  - OAuth 2 and OAuth 2
    - Implicit: `https://accounts.google.com/o/oauth2/auth`
    - Scopes: `https://www.googleapis.com/auth/dataproc`
    - Authorization code: `https://accounts.google.com/o/oauth2/auth`
    - Token URL: `https://accounts.google.com/o/oauth2/token` scopes: `https://www.googleapis.com/auth/dataproc`
- TypeScript: <https://skmtc.dev/google/apis/dataproc/docs/v1/projects/:projectsId/regions/:regionsId/operations/:operationsId:cancel/post.ts> (a function with typed inputs; its response is checked against the schema)

Starts asynchronous cancellation on a long-running operation. The server makes a best effort to cancel the operation, but success is not guaranteed. If the server doesn't support this method, it returns google.rpc.Code.UNIMPLEMENTED. Clients can use Operations.GetOperation or other methods to check whether the cancellation succeeded or whether the operation completed despite cancellation. On successful cancellation, the operation is not deleted; instead, it becomes an operation with an Operation.error value with a google.rpc.Status.code of 1, corresponding to Code.CANCELLED.

## Path parameters

- `projectsId` string, required
- `regionsId` string, required
- `operationsId` string, required

## Response `200`

Successful response

- Empty: A generic empty message that you can re-use to avoid defining duplicated empty messages in your APIs. A typical example is to use it as the request or the response type of an API method. For instance: service Foo { rpc Bar(google.protobuf.Empty) returns (google.protobuf.Empty); }

## Changes

- **2026-10-29** `99b75ef6e002`: 4 info
  - the security scope `https://www.googleapis.com/auth/cloud-platform` was added to the endpoint's security scheme `Oauth2`
  - the security scope `https://www.googleapis.com/auth/cloud-platform` was added to the endpoint's security scheme `Oauth2c`
  - the security scope `https://www.googleapis.com/auth/dataproc` was removed from the endpoint's security scheme `Oauth2`
  - the security scope `https://www.googleapis.com/auth/dataproc` was removed from the endpoint's security scheme `Oauth2c`

[Operation history](https://skmtc.dev/google/apis/dataproc/changes/v1/projects/:projectsId/regions/:regionsId/operations/:operationsId:cancel/post.md)

---

[API](https://skmtc.dev/google/apis/dataproc.md) - [All operations](https://skmtc.dev/google/apis/dataproc/llms.txt) - [OpenAPI document](https://skmtc.dev/google/apis/dataproc/revisions/99b75ef6e002?raw)