If you are still determining which data subscription you need for the markets you trade, you can use our margins page as a reference.
Simply look at the "Exchange" column and notice the exchange is listed for that particular market.
There may be some confusion as some exchanges will show CME multiple times, but you will notice Crude oil trades under "NYMEX/CME." This means you will need "NYMEX" exchange data to see real-time data for Crude Oil.
For markets under "CME," you will see "CME" listed independently.
Now you will know when you complete your LIVE setup trading request in the form which exchange to select when activating or changing data subscriptions.