When does Historical Pricing via RDP date back to?
How frequently/when is the latest Historical Pricing data updated/retrievable via RDP?
I can't find out any user guides/documents on the contents with the information so your clarification would be very helpful.
According to Start / End / Count handling section of Historical Pricing: Time Series Summary (bar), Events (T&S) tutorial, if you did not specify start and end date, the data starts at earliest available till latest available. Please see more details in the tutorial.