I have booked flights 2 SIN-DOH-LHR on separate bookings due to the different return dates. For one of the bookings, I linked it to the privilege club member, but it is not the name of the member, hence I chose the option - other passenger. After completing the booking, it seems that it had not asked for the passport number. For the other booking, because it's the member of the privilege club, passport number was automatically entered.

I would like to ask if there will be any implications to the ticket without the passport number? Or is there anyway to enter the passport number? Couldn't call the office due to the weekends. Tickets were booked during promotion period. Thank you.