Has Dynamic Trade Date

Function Has Dynamic Trade Date within
Market returns TRUE if the referenced Market object has a dynamic trade date, which means its effective trade date during some operation is adjusted to equal the globally set trade date that is in effect at that time.
This is the case when no defined trade date (also known as observation or valuation date) is stored in association with its key
Trade Date
Returns FALSE when a specific fixed date is stored with the above key.
When TRUE the referenced Market object can be used without restrictions in any pricing context because it will always assume the globally set trade date.
When FALSE it can be used only in pricing contexts where the globally set trade date matches its own locally stored trade date.

When the referenced object is of type
Market Set, it is considered to have a dynamic trade date if and only if all items in the collection have a dynamic trade date.