Argthtjtr

I just started working with web Service , SOAP messages and endpoints and I have a little problem with a soap message that I am trying to send.
I connect with a wsdl endpoint using this code

public class MessageProcessorTestClient : IMessageProcessorServiceContract {

   #region Implementation of IMessageProcessorServiceContract



   public void SubmitDocument(string documentXml, IcisNetSecurityToken token, MessageTypeIcisNet type) {

      //Test enviroment force TLS 1.2

      ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072;

      ServicePointManager.ServerCertificateValidationCallback += (se, cert, chain, sslerror) => {

         return true;

      };



      ServicePointManager.Expect100Continue = false;

      using (MessageProcessorPortTypeClient client = new MessageProcessorPortTypeClient()) {



         ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072;

         client.ClientCredentials.UserName.UserName = "username";

         client.ClientCredentials.UserName.Password = "password";



         MessageSubmissionRequest req = new MessageSubmissionRequest {

            DigitallySignedMessage = new SubmittedXMLMessageInfo {

               isXmlString = true,

               messageType = MessageHelper.GetTestMessageType(type),

               xmlMessage = documentXml

            },



            traderID = token.Afm,

            wsUserID ="wsUsername",

            wsPass = "wsPass"

         };



         client.Open();

         MessageSubmissionRequestResult result = client.processIncomingMessage(req);



         if (result.resultState.status != RequestState.OK) {

            throw new MessageException(ResultToString(result.resultState),

            ErrorsToString(result.ProcessingErrors));

         }

      }

   }

}

I also use code to XSD to create the XML which is located here:
https://portal.gsis.gr/icisnetcms/getFile?ClazzName=com.unisystems.icisnet.cms.ProdcompAttachments&UID=10579260&MemberName=Upload&language=GR

I have successful connection with the endpoint but it returns an error.

RulesConditionasError: SubmittingTraderIdentification ([SubmittingTraderIdentification: null] must be the same as the trader ID (120087250)

In my soap message I already have declared the submittingTraderIdentification

<SubmittingOperator>                  

   <SubmittingOperatorIdentification>120087250</SubmittingOperatorIdentification>

   <SubmittingTraderIdentification>128892649</SubmittingTraderIdentification>

</SubmittingOperator>

The endpoint location is:
https://www2.gsis.gr/wsicisnet/MessageProcessorService?wsdl

Can someone tell me what I may sending wrong?
The documentation that they give is really poor and when I contact with them by phone they said that they see the message seems correct but they don't know why I have this response.

I don't know if I should add anything else so can someone help me out.