This article provides step-by-step instructions to retrieve the GUID (Globally Unique Identifier) for a SharePoint site and its subsites
https://<tenant>.sharepoint.com/sites/<sitename>/_api/site/id
<tenant> with your SharePoint tenant (e.g., your organization’s domain).<sitename> with the name of your SharePoint site.<d:Id> tags, as shown in the example below. The GUID is highlighted yellow for reference:To retrieve a SharePoint subsite, you can use Microsoft Graph Explorer, a tool provided by Microsoft to interact with Microsoft Graph APIs directly in your browser.
Sign in with your Microsoft account.
Use the following endpoint:
Replace {hostname} with your SharePoint host (for example, contoso.sharepoint.com).
Replace {relative-path-of-your-subsite} with the relative path of your subsite.
Example:
Click "Run Query" to retrieve the subsite details, including the site GUID and other metadata.
You can now use this GUID for further operations in COZYROC Microsoft Graph Rest Connection Manager.