---
updatedAt: 2026-03-19T13:04:31.000Z
agentTools:
  siteIndex: https://support.pagerduty.com/llms.txt
  projectIndex: https://support.pagerduty.com/actions/llms.txt
---

# List Related Change Events for an Incident

> 📘 Availability
>
> This workflow action is available on our Enterprise plan for Incident Management. Contact our [Sales Team](https://www.pagerduty.com/contact-us/#contact-sales) to upgrade to an account with this action.

# Description

Lists related Change Events for an incident, as well as the reason these changes are correlated with the incident.

# Instructions

1. If you have not done so, follow the instructions to [Create an Incident Workflow](/main/docs/incident-workflows#create-an-incident-workflow).
2. When the instructions prompt you to [add actions](/main/docs/incident-workflows#add-actions), select **this action**.
3. Enter the following **Inputs** and click **Save**.
4. Continue following instructions to **Publish** the Workflow.
5. When the action runs, you will see the **Outputs** listed below.

# Inputs

> 📘 Field References
>
> Fields with the **{+}** icon accept [Field References](https://support.pagerduty.com/main/docs/incident-workflows#field-references), which can be useful for referencing incident data or outputs created in prior workflow steps. To add Field References, click **{+}**, or enter `{{`, and select relevant fields. Refer to the [Field References](https://support.pagerduty.com/main/docs/incident-workflows#field-references) article for more information.

<br />

| Name        | Description                                                                                         |
| :---------- | :-------------------------------------------------------------------------------------------------- |
| Incident ID | The ID of the Incident whose related Change Events will be returned. Defaults to `{{incident.id}}`. |

# Outputs

| Name                           | Description                                                                                                                                                         |
| :----------------------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Number of Change Events        | The total number of Change Events related to the incident                                                                                                           |
| Change Events                  | The JSON-formatted list of Change Events. **Note**: This JSON will exactly match the value of the `change_events` property returned from the endpoint linked below. |
| Timestamp of Last Change Event | The timestamp of the most recent Change Event                                                                                                                       |
| Summary of Last Change Event   | A brief summary of the most recent Change Event                                                                                                                     |
| Source of Last Change Event    | The source of the most recent Change Event                                                                                                                          |
| Result                         | Value that shows if the action was successful or not. Either "Success" or "Failed."                                                                                 |
| Result Summary                 | Brief description of what the action did or if it failed.                                                                                                           |
| Error                          | Brief description that populates if the action failed.                                                                                                              |

# PagerDuty API Endpoint

Endpoint used:

* [List related Change Events for an Incident](https://developer.pagerduty.com/api-reference/c7afb7de35741-list-related-change-events-for-an-incident)