How to set or add HTTP Header in a SOAP Request. Simple create a Hashmap. Here it is an example.

Set Header HTTP Request

when creating SOAP Request, in Stub class 
for which method you want to add header, Under this method just add this hashmap and fill that hashmap with a key value pair if you want to send details in the form of key value. We can create a list also if we want to send List values in Header.
This is an example to send Headers in Http Request. Here I am sending client ID and Password to INDUSIND Bank at the time of sending SOAP Request.


Hashtable headers=new Hashtable();
  headers.put("User-Id", "KapilrajChouhan");
  headers.put("Password", "password");
  _setProperty(HTTPConstants.REQUEST_HEADERS, headers);
   
Where 
    1.) User-Id --> Key and afcc0f96-165d-4dde-83f0-2ae505b0d6ae --> is key Value
    2.) Password --> key and password --> is key Value
    
We can modify key/values accordingly.