New Delhi, July 29: Indian travellers can now use the Unified Payments Interface (UPI) to make online bookings for At the Top, Burj Khalifa, with the iconic attraction becoming the first in the UAE to accept the payment system for e-commerce transactions, NPCI International Payments Limited (NIPL) said on Wednesday. The international arm of the National Payments Corporation of India (NPCI) said the launch of the facility is in partnership with NEOPAY and Emaar Entertainment.