Am I required to trade the front-month futures contract?

Traders must trade the front-month contract for each product, as it has the highest liquidity and open interest. For example, in March, the correct contract for the ES E-Mini S&P 500 products is the March (H) contract—not July (N) or September (U). Trading out-month contracts is prohibited and may result in the loss of your account. Always ensure you’re trading the active front-month listed on the exchange.​To identify the most active front-month futures contracts, you can use CME Group’s Product Slate, which provides detailed information on all available contracts, including their current front-month status. ​ https://www.cmegroup.com/markets/products.html?