Web services http将xml文档发布到webservice c#返回错误500

帮帮我 我http将xml文档发布到Methodos webservice：

使用POSTMAN发布XML：

。位于System.Web.Services.ProtocolFactory.Create的System.Web.Services.Protocols.SoapServerProtocol.CheckHelpServerVersion（）位于System.Web.Services.Protocols.ServerProtocolFactory.Create（类型、HttpContext上下文、HttpRequest请求、HttpResponse响应、布尔和中止处理）

soap:VersionMismatchPLS，帮帮我帮帮我
<ACCESSGW>
<MODULE>SMSMO_NOTIFIER</MODULE>
<MESSAGE_TYPE>NOTIFY</MESSAGE_TYPE>
<COMMAND>
    <queueID>3799706</queueID>
    <msisdn>84912555757</msisdn>
    <cpURL>https://www.google.com.vn/</cpURL>
    <channel>SMS</channel>
    <price>1000</price>
    <moID>27683</moID>
    <commandcode>DK</commandcode>
    <short_code>6713</short_code>
    <expiredTime>20180326102947</expiredTime>
    <cpID>1</cpID>
    <cpcode>MEDIA</cpcode>
</COMMAND>
</ACCESSGW>

[WebMethod]
public XmlDocument NOITIFI_SMSMO(string queueID,string msisdn,string cpURL,string channel, string price, string moID, string commandcode, string short_code, string expiredTime, string cpID, string cpcode)
{
    XmlDocument doc = new XmlDocument();
    SmsAutoRecv smsAutoRecv = new SmsAutoRecv();
    smsAutoRecv.queueID = queueID;
    doc.LoadXml("<ACCESSGW>0</ACCESSGW>");
    return doc; 
}