public Result QiyeSingleMoneyTransferInterface(string requestNumber, Req_4004 req_4004, string counterId = "", Attachment attachment = null)
        {
            var be     = new BankEnterpriseDirectInterface(this.IsSpecialLine);
            var result = be.QiyeSingleMoneyTransferInterface(requestNumber, req_4004, counterId, attachment);

            return(CommUtils.ToResult(result));
        }