Just an FYI that SVP PF-REST is not supported on the HM850 F/Gxx0 (e.g. G350/700/900) series
REST-API queries must be to the controllers directly
Only the R900/5x00 series supports SVP PF-REST, meaning REST-API queries fired directly at the Windows management platform that you access Storage Navigator and/or perform maintenance through
Just because something ‘works’ or responds to a query doesnt mean its supported, your mileage may vary 