List Cancel Request StandardHeader Standard Header Y MsgType = K 66 ListID ListID Y 60 TransactTime TransactTime Y Time this order request was initiated/released by the trader or trading system. 58 Text Text N 354 EncodedTextLen EncodedTextLen N Must be set if EncodedText field is specified and must immediately precede it. 355 EncodedText EncodedText N Encoded (non-ASCII characters) representation of the Text field in the encoded format specified via the MessageEncoding field. StandardTrailer Standard Trailer Y