Media Server 25.4
Media Server Help

# CancelACIAction

Cancel an ACI action.

You specify the action to cancel using a thread value, which you can find using the `ACIThreadStatus` action. The server then stops the action as soon as possible, if it can be canceled.

You can use `CancelACIAction` to cancel the following actions when they are run synchronously:

- Process
- BuildAllFaces
- BuildAllObjects
- BuildAllVehicleModels
- BuildFace
- BuildObject
- BuildVehicleModel
- TrainFace
- TrainObject
- TrainVehicleModel

NOTE: This is a service control action that can be sent only by users that belong to an authorization role that allows the `ServiceControl` standard role, or which enables the action explicitly. See Authorization Roles Configuration Parameters.

## Example

    http://12.3.4.56:9002/action=CancelACIAction&Thread=4

This action stops the action that is being processed on thread 4.

## Required Parameters

The following action parameters are required.

Parameter | Description
--- | ---
Thread | The thread of the action to cancel.

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Version 25.4 | Last updated October 2025

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Product: Knowledge Discovery Media Server 25.4

Topic Title: CancelACIAction