How can I get a list of parameter for "fields" that can be downloaded historically for a specific item?
For example in the above, if I enter ['PH','PL','PO','PI'] to "fields", then I would get the respective time-series data for 'AMXTPNJ'.
So, is there a way to find all available parameters ('PH', 'PL', 'PO', 'PI' in the above example) that can be entered into "fields" for each of non-static item?