At Horizon Enterprises, patrons submit their orders to the customer service hub, where attendants open the orders and assess them for accuracy. These attendants then input the orders into the system, during which the system performs various data checks, including reasonableness tests. While data entry is in progress, the system automatically populates the order input screen with relevant information from the customer and inventory master data. Once the system generates the completed order, an attendant reviews it $($assuming there are no discrepancies$)$ and proceeds to confirm the order by selecting the "save" option on the input screen. Subsequently, the system generates a sales order master record, updates the inventory master data to allocate stock to the sales order, generates and dispatches a picking ticket to the warehouse, and displays the sales order number for the customer service center attendant. The attendant then sends this order number to the customer via email.

Required:

Prepare a context DFD

Prepare a Level$-$O DFD

Prepare a Systems Flowchart $($not a Document or Program flowchart$).$