As stated in the title, I\'ve been trying to use the Microsoft Graph API to pull an Excel workbook from our company\'s Sharepoint site. I am able to retrieve the metadata for th
You can't use /workbook against a ListItem, it can only be used with a DriveItem.
/workbook
In order to do that, you'll need to first obtain the DriveItem associated with the ListItem:
DriveItem
ListItem
/v1.0/sites/{siteid}/lists/{listid}/items/273/driveitem/workbook