Data transfer multicompany using AIF services

Dear All,

public void SetSourceEndpointAndUser(string sourceEndpointName)

 {

     string userName = System.Security.Principal.WindowsIdentity.GetCurrent().Name;

     var addressHeader = AddressHeader.CreateAddressHeader("SourceEndpointUser", "http://tempuri.org", userName);

    var addressBuilder = new EndpointAddressBuilder (

    new EndpointAddress (new Uri ("urn:" + sourceEndpointName), addressHeader));

    var endpointAddress = addressBuilder.ToEndpointAddress();

    OperationContext .Current.OutgoingMessageHeaders.From = endpointAddress;

 }

Above i wrote code for setendpoint

but i got exception below,

Addressing Version 'AddressingNone (http://schemas.microsoft.com/ws/2005/05/addressing/none)' does not support adding WS-Addressing headers.

Thanks,
Manikkam.