---
title: Log messages from an indexing pipeline extension
slug: '140'
canonical_url: https://docs.coveo.com/en/140/
collection: index-content
source_format: adoc
---
# Log messages from an indexing pipeline extension
The following procedure describes how to log messages from an [indexing pipeline extension (IPE)](https://docs.coveo.com/en/206/) using the [Extension API](https://docs.coveo.com/en/7/).

. [Create an extension script](https://docs.coveo.com/en/146/).

. In the extension script, use the [`Log`](https://docs.coveo.com/en/34/) method.

. [Apply the extension to a source](https://docs.coveo.com/en/1936/).

. Rebuild the [source](https://docs.coveo.com/en/246/) to run the extension and affect how the content is [indexed](https://docs.coveo.com/en/204/).

. Once an [item](https://docs.coveo.com/en/210/) is processed and the extension is applied, a log entry can be viewed on the [Coveo Administration Console](https://docs.coveo.com/en/183/) [**Log Browser**](https://platform.cloud.coveo.com/admin/#/orgid/logs/browser/) ([platform-ca](https://platform-ca.cloud.coveo.com/admin/#/orgid/logs/browser/) | [platform-eu](https://platform-eu.cloud.coveo.com/admin/#/orgid/logs/browser/) | [platform-au](https://platform-au.cloud.coveo.com/admin/#/orgid/logs/browser/)) page.
Once the source is rebuilt, all log entries are available.

![Testing extension logs | Coveo](https://docs.coveo.com/en/assets/images/index-content/testing-extension-logs.png)

> **Important**
>
> In the **Log Browser**, you can only see your log message when you expand a row detailing an `Applying extension` **Stage**.
> Your log message will only appear when the `Add` **Operation** **Result** is `Completed`.
> By design, any other value for **Operation**, **Result**, or **Stage** means that there's no log message available.