title: Modify SOAP header Mustunderstand attribute in WCF client
body: <p>I am writing a WCF client for a service (not WCF). Getting  an error that Unprocessed 'mustUnderstand' header element: {http://www.w3.org/2005/08/addressing}Action, because request SOAP contains header with mustunderstand='true'. I have to either set it false or remove the whole header. can you show the way to do that?</p>
  
  <p>Here is the binding code </p>
  
  <pre><code>var transportElement = new HttpsTransportBindingElement();
          transportElement.AuthenticationScheme = AuthenticationSchemes.Basic;
  
          var messegeElement = new TextMessageEncodingBindingElement();
          messegeElement.MessageVersion = MessageVersion.CreateVersion(EnvelopeVersion.Soap11);
  
          var binding = new CustomBinding(messegeElement, transportElement);
          return binding;
  </code></pre>