Post by ***@verizon.net25 A3 was badly needed.
The number of aces in your hand must be authorized information to
you. Before, at least in ACBL, if you discovered you had given the
wrong BW answer because your partner gasped, you could not correct
it.
The new L25A3 merely codifies existing interpretation, and I don't see
different rulings being likely.
The critical decision the Director needs to make for L25A is whether
your call was intentional or not at the time it was made. If
unintentional, you can change it regardless of how you came to notice
the wrong call face up on the table. That was the practice before, and
now it's explicit.
If you give the wrong number of aces, usually that will be judged an
intentional call, and no change will be allowed. Circumstances could,
of course, allow a change in a specific case.