Client from SharePoint Online is "OneDrive"

[fjbelizon]

Since a few weeks ago, after updating the AddIn node in the App Registration we use, we have seen a change that has quite an impact on our developments:

The ‘client’ parameter that arrived at the endpoint before was "SharePoint" in submissions from SharePoint Online and Teams, and "OneDrive" in submissions from OneDrive.

What has changed so that now the value "OneDrive" arrives from SharePoint Online, and how can we solve this problem? We need your feedback on this.

Thanks in advance.

Best regards,
Fernando

[fjbelizon]

I extend the information:

We have an App Registration for File Handler 2.0 connectivity. In the "AddIns" node of the manifest we have four "custom" actions that point to our own endpoints.

Until the update, our endpoints, through the HTTP POST made by the App Registration through File Handler 2.0, received in the "Client" property of the "ActivationParameters" the value "SharePoint" when the origin (client) was SharePoint Online or Microsoft Teams channels, and the value "OneDrive" when the origin (client) was OneDrive for Business.

After updating the "AddIns" node to include two additional "custom" actions, we get the "Client" property of the "ActivationParameters" the value "SharePoint" only from Microsoft Teams channels, and the value "OneDrive" when the origin is SharePoint Online or OneDrive for Business.

The strange thing is that this behaviour does not happen in all updates. There are tenants in which it is happening and tenants in which it is not. We do not know what the casuistry is and why. We know that Microsoft is making updates, as the appearance of the File Handler 2.0 menus has changed and now appears in a unified way in SharePoint Online and OneDrive, and we suspect that this problem is derived from the update they are doing.