---
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 chart will enter Canceling state.

## Client Permission Restrictions
[Permission Type](projects\project-properties\project-properties.md#client---permissions): 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
### Throws
Will throw a KeyError if the ID does not match any running chart instance.
### Scope
All

## Code Examples
```python title="Example #1"
# The following will attempt to stop an SFC but will alert the user if the id of the chart is not currently running
id = 'Some long string value obtained from earlier in the script'
try:
    system.sfc.cancelChart(id)
except:
    system.gui.messageBox("Could not stop the SFC")
```