Hi Hayashi ,
Refer to the installation guide it is optional .. as mentioned in the installation guide :
Also it is not a reporting tool but a tool used or monitoring .. and meeting demands in control
read below for Key Figures in Order to Forecast and Monitor
Customer planned demands: This key figure contains the following demands
1.Customer’s net demands; for example, from the customer’s net demand planning
2.Dependent demands from the customer's orders that are still at the planning stage; for example, planned orders, purchase requisitions, and scheduling agreement release schedule lines in the second firm/trade-off zone
Customer firm demands: This key figure can contain the following demands standard, open demands from orders in the customer system that the customer regards as firm. These include scheduling agreement release schedule lines in the first firm/trade-off zone and purchase orders.
1.Supplier planned receipts: This key figure contains receipts that the supplier has forecast in his or her backend system for the customer and transferred to SAP SNC.
Alternatively, the supplier can manually enter planned receipts in the Demand Monitor or in the SMI Monitor of SAP SNC
2. Supplier firm receipts: As standard, this key figure contains confirmation schedule lines that the supplier has created manually in SAP SNC or sent from his or her backend system to SAP SNC.
3. Percentage plan deviation:
100*(supplier planned receipts - customer planned Demands)/customer planned demands
4. Absolute plan deviation: supplier planned receipts – customer planned demands
5. Percentage order deviation:
100*(supplier firm receipts – customer firm demands)/customer firm demands
6. Absolute order deviation: supplier firm receipts – customer firm demands