Hello,
I'm trying to create a simple prototype of a flow where I have a SPO list and in every entry of that I attach a file, then I try to retrieve it with "Upload file from URL" to copy in OneDrive fro Business folder but when I execute it I obtain a 403 - Forbidden error.
The flow is this:

and this is the error retrieved:

For OD4B I used a user that has a permission to access that folder (the user is the owner of the OD4B account); I also used the same user to retrieve data from SPO List and "SharePoint Get Attachments" connectors but without success.
Any explanation?
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Regards