South asked meaning of 3♣ to his screenmate (West) at his turn after the 3♣ bid. It was explained as ♦s and ♣s.

East had alerted and explained 3♣ as limit raise in ♦

N lead ♣7 and 3♦ made

After deal TD was called by S saying had he known 3♣ is limit raise in D he would double to indicate ♣ and desire to compete somewhere .

EW were not regular partners and they did not have a Convention Card

After consultations TD ruled table result stands.

Were NS damaged by the misexplanation? (NS can make 3h or even 3s)

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