Aggregate Planning Entity
          An Aggregate Planning Entity (APE) represents a group of Channel Products (CP), which is used to interact with the user. An APE is defined based on attributes from Product and Channel. For example:
         
         - Product at Region: If the APE is a combination of the base product, and region is an attribute of a Warehouse or Customer based on the Channel definition.
 
- Product Line at Region: If Product Line is an attribute of the product, and the region is an attribute of Warehouse or Customer, based on the Channel definition.
 
          Note: If Channel is set to Customer, an APE can be Product at Warehouse, where the selected warehouse is the default shipping location for the customer.
         
         These are the various APE types:
- Forecasting: To generate the forecast, modify adjustments in the APEs, and apply to the base CP.
 
- Reporting: To view the sum of forecasts from the base CP. 
           Note: This APE type cannot create or modify the forecast.