Bsevenfour & Oldsmokey are right,
As per Singapore Aeronautical Information Service, AIP SUPPLEMENT 49/01 , 6th September 2001, effective 1930z on November 1st , 2001 , on some route (G220,L625,L642,M751, M753, and so on) No-PreDepartureCoordination flight-levels will be allocated.
They don't coordinate with the next controlling authority .