---
title: "Cancels a user-induced fault operation."
method: POST
path: "/Faults/$/Cancel"
tags: ["Faults"]
---

# Cancels a user-induced fault operation.

`POST /Faults/$/Cancel`

The following APIs start fault operations that may be cancelled by using CancelOperation: StartDataLoss, StartQuorumLoss, StartPartitionRestart, StartNodeTransition.

If force is false, then the specified user-induced operation will be gracefully stopped and cleaned up.  If force is true, the command will be aborted, and some internal state
may be left behind.  Specifying force as true should be used with care.  Calling this API with force set to true is not allowed until this API has already
been called on the same test command with force set to false first, or unless the test command already has an OperationState of OperationState.RollingBack.
Clarification: OperationState.RollingBack means that the system will be/is cleaning up internal system state caused by executing the command.  It will not restore data if the
test command was to cause data loss.  For example, if you call StartDataLoss then call this API, the system will only clean up internal state from running the command.
It will not restore the target partition's data, if the command progressed far enough to cause data loss.

Important note:  if this API is invoked with force==true, internal state may be left behind.

## Query parameters

- `api-version` '6.0', required
- `OperationId` string, uuid, required
- `Force` boolean, required
- `timeout` integer

## Response `200`

A successful operation will return 200 status code.

## Other responses

- `default` — The detailed error response.

---

[API](https://skmtc.net/azure/apis/servicefabric-servicefabric.md) · [All operations](https://skmtc.net/azure/apis/servicefabric-servicefabric/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/azure/servicefabric-servicefabric/revisions/8fd479ce0f16/schema)