Originally Posted by
Kmxu
I just filled up the information, including e-ticket number of partner airlines, city pair, travel date, fare class, and seat, I got approved instantly. I did not need to call, nor did I make a copy of the boarding pass. It was quite easy.
Where did you enter this? The online form for missing mileage credit has a drop-down selection box for airline, and Vistara is not listed.