Pillar

The column titled #Pillar is used only if Pillar Choice equals Custom Date, in which case it is mandatory and contains elements of type Date.
Each element represents the custom date associated with each provided market quote that is meant to be used as pillar date during the curve building.
The market quotes are defined in tables that are part of several subtypes of Yield Curve Input
For example, in the table associated with the key Set of type Yield Curve Ois