Demand and Supply Network Planning Queries

Hi All,

Here under are some queries:

1. what is the value of Delta in Forecast and actual demand in Demand Planning ? I guess it will vary across the different industries . What is the range for FMCG, heavy industries and other sectors ?
2. In Capable to Match (in SNP) we prioritize the unprioritized demand ..Where from we are getting the demand ? is it Planned orders which are being reflected as demands in CTM ?
3. Can you please explain Final Forecast, Planned Order and Purchase Requisition (in Product View –RRP3) from system point of view i.e. upto what level we can change/modify /delete in the system and when it's become firm .

Thanks in advance..!!