allows service consumers to provide the correct & latest up-to-date controller information, create, modifiy, udate ASPL or SFPL, Submit requests about instructions/clearances given to the flight crew (e.g. DCT, CFL, NFL, speed, heading, …), Change status information regarding the flight’s airframe (e.g. no FSSA, RVSM status, …), Etc.
Real World Effect
Any instruction communicated to the pilot (either via voice or datalink) are expected to be executed by the aircrew. Furthermore, such information is communicated towards downstream partners and the network manager.