Had to make a call on the hand attached. Bidding starting with South:
2N - 4d (1)
4h - 5d (2)
(1) Oppos asked meaning of 4d. Not on bidders card, but he stated, somewhat vaguely "looks like a transfer".
(2) Was asked about the the 5d, and evenly more vaguely suggested "probably a 2nd suit".
...and passed it out.
Oppos reckon N had UI and was compelled to bid again in this "slam try auction" and score should be corrected to 6D, or 6H minus a few, instead go 5d making (East unlikely small club lead).
I ruled that score stands on grounds that no useful UI passed hands (of which I was aware) and that N is always rebidding diamonds has no inclination to play in hearts opposite a hand that opened 2N, and passing any diamond contract at first available opportunity. A wheel had clearly come off with the 4D seemingly "undiscussed".
Have I missed anything?