> For the complete documentation index, see [llms.txt](https://docs.greytrix.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.greytrix.com/gumu-salesforce-integration/sage100/greytrix-sage100-webapi-installation/prerequisites.md).

# Prerequisites

For installing the GUMU™ Sage 100 API, you need ALL the following components:

1. Sage 100 application pre-installed.
2. IIS application

**Note**: Ensure you have the following Roles and Features added via Server Manager (see image below):

<figure><img src="https://794987320-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MCRVg-TYx3gVa2Tqtf_%2Fuploads%2Fr6ahYHVwJ4fF2Qyf5mBW%2Fimage.png?alt=media&amp;token=1c055eb3-3dae-48b4-b389-e39894fe9560" alt=""><figcaption></figcaption></figure>

3. SSL certificate for secure communication.
4. A Windows domain user with administrative rights is required (this account will be configured in IIS under the Application Pool).