## Documentation Index

Access the complete documentation index at:
https://www.zoho.com/books/developer/llms.txt

Use this file to discover all available documentation pages before proceeding.

# Test Extensions

Once you’ve built your extension, you can test it in the Zoho Books sandbox environment to ensure that it is working properly. This will help you review your extension before submitting it to our team for review.

To test your extension:

*   Go to Zoho Books Developer Portal.
*   Click **Test Your Extension** on the top right corner of the page.

![Click Test Your Extension](/books/developer/images/extensions/test-extensions/test-your-extension-button.png)

You’ll be redirected to the Zoho Books sandbox environment. You can test your extension here.

![Zoho Books sandbox environment](/books/developer/images/extensions/test-extensions/zoho-books-sandbox-environment.png)

If you’ve released multiple versions of your extension, you can also test a particular version of the extension. Here’s how:

*   Go to Zoho Books Developer Portal.
*   Switch to the **Publish** section at the top. The _Publish_ tab will open by default.
*   In the _Version History_ section, click the version number of the version that you want to test.

![Extension's version history](/books/developer/images/extensions/test-extensions/extension-version-history.png)

*   In the pop-up that appears, click the URL below _Private Installation URL_. You’ll be redirected to the _Extension Installation_ page.

![Privation installation URL of a extension version](/books/developer/images/extensions/test-extensions/version-private-installation-url.png)

*   On the _Extension Installation_ page:
*   Select the organization for which you want to install the extension from the dropdown below the **Select Organization** field.
*   Read and agree to the terms and conditions specified.
*   Click **Next**.
*   In the following page, authorize the connections required for the extension and click **Install Extension**.

The specific version of the extension will be installed in the Zoho Books organization that you chose previously. You can test this version of the extension in your organization.