Class Position in Futures Account 
To manage classes in a futures account, you have to define the class position in the futures account.
To manage a position with margin calculation, you have to select Future style as the settlement category when you define product types in Customizing for futures. If you select Normal style the position is managed without margin calculation.
Here, you also have to define the exchange and the price type. In the case of a variation margin run, the settlement price is calculated using these entries.
Choose or the corresponding path in SEM Banking . Enter the company code, the ID number and the futures account.
For all open and close transactions the same Account Assignment Reference is used for a class position in a futures account.
When you enter the transaction, you can also choose to go to the class position in the futures account.