According to the Oracle Supply Planning Cloud User Guide1, simulation sets are used to create and compare different scenarios in a supply plan. A user can use one simulation set in multiple plans (A), use the same simulation set multiple times while editing the data in it ©, and add data to simulation set from plan inputs and from a supply plan (D). Simulation sets are not predefined (B), and it is not mandatory to associate simulation set in plan option while creating a supply plan (E).