Travelling on UA with another 1K.
Used my certs to upgrade the return, called the flashy new Polish Centre to have
the outbound upgraded with the certs of my companion.
Friendly, friendly agents tells me that he needs to ask supervisor to do so .. me
thinks this is because I asked him to use another person's SWUs..

But no - today my balance shows that I have been pulled 3 SWUs - 2 for the
return, 1 for the outbound. And my companion has been charged 1.
Now that would not be a big surprise if the trip wasn't on a single PNR!

According to the HNL and DEN centres and according to a written confirmation
from Elite Voice upgrades for one sector of a multi pax PNR can only originate
from one single source. A supervisor from HNL who tried to do this for me
even told me that the system would simply not allow applying upgrades from
several sources...
So now I wonder what software tool the PCC has, HNL doesn't ?