I had a related question several months ago, and the answer was that currency conversion information is not available via the REST API: https://forums.developer.apple.com/thread/110931If there are any Apple folks who read this, can we please put in a feature request to add estimated developer proceeds in native currency to the API sales reports? The App Store Connect user interface has had this feature for several years via the 'Sales' and 'Proceeds' pages, so I don't understand why we can't retrieve the same data from the API that we can retrieve from the interface.