There isn't. I've never seen one.
Odd you should say that. Because it was this post written actually by you that I was looking to get confirmation on:
. There are counters located in Terminal 1 (upstairs to the food court, before check-in), at T3 F/J check-in area (after immigration
, if the window is not manned, walk round through the door on the left and there will be an officer slouching at his desk looking very enthused)
and before immigration at arrivals.
Whatever, I'll figure it out when I arrive tonight.