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I am building a Canvas App that writes data to a backend Excel file using the Excel Online (Business) connector - https://docs.microsoft.com/en-us/connectors/excelonlinebusiness/ .
It appears that end users of the Canvas App also need write access to the backend Excel file.
Can you point me to where this is documented in Microsoft documentation?
Is there any way to configure the Canvas App to make all writes on behalf of a "shared user" so that I don't have to give write access to the Excel file to all end users?