How is Unconstrained Dependent Demand calculated in Supply Planning ?

Oracle Fusion Cloud Supply Planning

Constrained Supply Plan

How is the value for the measure "Unconstrained Dependent Demand Calculated"?

Got below definition from oracle documents but I was not able to understand the part "unconstrained demand on the need-by date of a supply". It's not matching with my material plan table value so I'm not able to understand the exact calculation logic.

• Unconstrained Dependent Demand is the unconstrained demand on the need-by date of a supply. This calculated measure is the sum of production forecast, planned order demand, transfer order demand, nonstandard job demand, and work order demand on the need-by date.