> ## Documentation Index
> Fetch the complete documentation index at: https://www.plain.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Timeline entry changed

> Fired when a timeline entry is added, updated or removed.

This event is fired when an entry on a customer or thread timeline changes. `changeType` is `ADDED`, `UPDATED` or `REMOVED`; `previousTimelineEntry` is null on `ADDED`.

## Schema

[**View JSON Schema →**](https://core-api.uk.plain.com/webhooks/schema/latest.json)

Example:

<Snippet file="webhooks/timeline-entry-changed.mdx" />

<Snippet file="webhooks/sdk-usage.mdx" />