---
title: "system.sfc.cancelChart"
description: "Cancels the execution of a running chart instance."
---

# system.sfc.cancelChart

> Cancels the execution of a running chart instance.

This function is used in **Python Scripting**.

## Description
Cancels the execution of a running chart instance. Any running steps will be told to stop, and the SFC chart will enter Canceling state. Will throw a KeyError if the ID does not match any running chart instance.

## Client Permission Restrictions
[Permission Type](../../../ignition-modules/vision/vision-project-properties/vision-project-properties.md#vision-permissions-properties): SFC Management

Client access to this scripting function is blocked to users that do not meet the role/zone requirements for the above permission type. This function is unaffected when run in the Gateway scope.

## Syntax
`system.sfc.cancelChart(id)`

### Parameters
Type | Parameter | Description 
------- | ------- | ------
String | `id` | The ID of the chart instance to cancel.

### Returns
Nothing
### Scope
Gateway, Vision Client, Perspective Session

## Code Examples
```python title="Code Snippet"
# The following attempts to stop an SFC but will alert the user if the id of the chart is not currently running.
id = 'Some long string value. It can be obtained using system.sfc.getRunningCharts()'
try:
    system.sfc.cancelChart(id)
except:
    system.gui.messageBox("Could not stop the SFC")
```