Receiving this message when I pull up the XML or XSD on the Data Source. "This XML file does not app

I am using the delivered Data Source of BI_INVOICE_DATA and delivered Report Definition of BIXCA.  I copied the XML and XSD from the Report Definition to the Data Source, but I continue to receive this message when I  pull up either of the files. "This XML file does not appear to have any style information associated with it."

When I look up the message on Oracle support the only thing that comes back is related to Oracle Financials not Psoft.

I have reviewed the documentation for query source XML and understand that if I change the query I reload the Source and Definition, but the Data Source here is an XML File. I am not sure how to deal with that.