从WCF返回答案时，出现“严格类型”错误

Question

  

System.InvalidOperationException：

     

操作“ procWsDocumentAsync”包含带有参数的消息。强类型或无类型的消息只能与强类型，无类型或无效的消息配对。

    MsgBody.Text = "<OPERVALS><BOOKINpG_ID>BK170001194</BOOKING_ID><DATE>20180828</DATE></OPERVALS>";

    senderId.Text = "DSVWS";
    acessCode.Text = "DSVWS2018";
    operationCode.Text = "BKCARGORECEPTION";
    senderMsgId.Text = "DSV321123134";

    StrMsgBody = MsgBody.Text;
    StrsenderId = senderId.Text;
    StracessCode = acessCode.Text;
    StroperationCode = operationCode.Text;
    StrsenderMsgId = senderMsgId.Text;
}

private async void Submit_Clicked_1(object sender, EventArgs e)
{
    string resposta;
    string resposta1;

    SCPCon.ScpWSIntegrationClient cli = new SCPCon.ScpWSIntegrationClient();
    SCPCon.procWsOperationResponse resp = await cli.procWsOperationAsync

    (
        new SCPCon.procWsOperationRequest   
        {
            ScpOperWsmsgRecUser_1 = new SCPCon.ScpWsmsgRecUser
            {
                wsMsgBody = StrMsgBody,
                wsMsgHeader = new SCPCon.ScpWsmsgHdrRecUser
                {
                   sentDatetime = DateTime.Now,
                   senderId = StrsenderId,
                   accessCode = StracessCode,
                   operationCode = StroperationCode,
                   senderMsgId = StrsenderMsgId,
                }
            }                 
        }
    );
    resposta = resp.ScpOperWsmsgResRecUser_2.resultText;
    resposta1 = resp.ScpOperWsmsgResRecUser_2.resultCode;    
}