[babalu1997]

w was playing 4 way transfers, and the bidding went

1nt-p-2nt-p-3c-p-3nt

I alerted-- 3c-- partner asks me to bid. since that was the agreemnet, i took it upon myself to alert.

The opp was a star player, nice guy certain curmudgeon qualities and a regualr at the game,who then told me there hand been no alert from the other side.

I told him the best i could do was alert my own bids, and he said not if you play natural 2nt response.

Later it turned out that partner had forgotten we played transfers, but still,

what am I to do if partner forgets the agreement, how much further am i to answer opps queries.

[paulg]

Just answer the queries according to your system agreements - in all forms of the game.

[barmar]

It probably depends on the specific club's alerting requirements, but in ACBL you don't generally alert bids that are forced by a transfer.

In the case you cited, it seems that the star player was making things more difficult. He knows that there may be a bidding misunderstanding, why is he telling you that your partner didn't alert the 2NT bid? Now you know as well.

Under normal circumstances, your partner's alerts and non-alerts are not authorized information for you. BBO's self-alert system makes it easy to apply this rule, since you don't see them. But information from an opponent is generally authorized information, so it seems like you now are allowed to act on the information that your partner failed to alert.

[Old York]

Was 3♣ a simple transfer response or a super-accept of partner's presumed Diamond suit?

There are various systems of 4-way transfers. Which minor did you think your partner was showing with the 2NT bid?
I think oppo are entitled to ask and receive full disclosure without having to ask again

Tony