For cancellation - What is the meaning of denaturing station? it is originating or from where I have booking. as in my case I have booking in 82301 from DHN to CBN, which is schedule at HWH at 1500 hours, but from DHN it is 1900, I have booking for today for DHN to CNB, I tried to cancel at 1110 - but its not allowed, what should I do