If that Indian happens to be 'NRI', may be he availed this facility with proper documents. Or he might have dual citizenship/abandoned Indian citizenship.

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My fellow passenger was a bonafide Indian passenger and not at all a NRI.
He was not even aware what why FT is mentioned on the reservation chart whenever he books ticket thru his agent. After checking on Google I only informed him that FT means "Foreign Tourist" Quota.

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Then may railways used out all available and unclaimed quotas for claimants. and your fellow traveller was one such who was allotted FT quota. If we see this 'quota' business, it is just earmarking certain berths for travellers under various categories. So it may look a matter of wonder, but it is a usual business. And the quota marked for different categories could be marked in chart and ticket due to computer programming. I do not see any irregularity. . Just like 'upgradation' even agents can do little or nothing. So here FT quota could have come to 'fellow traveller' that way.
Yet Agent approach proper area faster than a layman could.

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please inform me about what is PQWL in train number 12445
please

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First part reply of your post:
You can write a complaint to GM of NR with your ticket details.You can also send copy to railway board.
2nd part reply:
On this issue you can write to Chief Vigilance Officer NR (full address available at NR site or Hard book TT of North Zone).Please write details :PNR, Name and fro/to of passenger.

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