i went to the prs today along a personal application and id proof but i was denied change of boarding saying it can not be done till the time tkt is confirmed however booking clerk denied to give it in written abt the same. I had requested him to put his remarks in written on my application so that i can approach railway authorities after my tkt gets confirmed quoting that i had approached prs before 24 hrs from departure time for change of boarding. Now can anything be done for change of boarding (time left for departure is less than 24 hrs) ?