Which Cloud Application is NOT involved in back-to-back fulfillment of a make item in a...

According to the Oracle Supply Chain Management Cloud: Order to Cash training course3, back-to-back fulfillment of a make item in a sales order involves four Cloud Applications: Order Management, Supply Chain Orchestration, Manufacturing, and Inventory. Order Management captures and validates the sales order, Supply Chain Orchestration creates and manages the supply order, Manufacturing executes the production order, and Inventory receives and ships the finished goods. Purchasing (B) is not involved in back-to-back fulfillment of a make item in a sales order, but it is involved in back-to-back fulfillment of a buy item in a sales order.