contoso.sharepoint.com:/sites/marketing). If the call succeeds, the site_id you used is correct. Alternatively, you can find the site ID in the SharePoint Admin Center or by making a direct Microsoft Graph call to /v1.0/sites/{hostname}:/sites/{sitePath}.42) scoped to a list and obtained via Get Many Items on a list. Drive item IDs are long alphanumeric strings (for example 01BYE5RZ6QN3ZWBTUFOFD3GSPGOHDJD36K) and refer to files or folders in a document library. File actions (Download a File, Upload a File, Update a File) require a drive item ID, not a list item ID.MatchFieldName column you specified matched more than one item. This action intentionally rejects ambiguous matches to avoid updating the wrong record. Use a more unique column (or add additional filters to narrow down to a single item) before calling upsert again._ModerationStatus, AppAuthor) may be omitted. This is normal Graph API behavior and does not indicate missing data.Bring your team, systems, and AI into one place—then turn ideas into governed work.