Champaran HumSafar Express : इन अजनबी सी राहों में, जो तू मेरा हमसफ़र हो जाये, बीत जाए पल भर में ये वक़्त, और हसीन सफ़र हो जाये. - Piyush Singh

Simple, Just go to nearest railway station with a valid ID Card Xerox (Voter ID/PAN Card/AADHAAR/etc...) and also printed E-Ticket. You have to ask Booking Clerk to Change the Boarding Point RJY to TNKU. This is one and only procedure to change the boarding point... All the best. Have a nice Journey.

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Xerox copy of ID card is not accepted always, better to carry original ID along.

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No I had already do this. This all info printed on E-TKT only. They collect the ID Card Xerox also....

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