title: Unable to authenticate Quickbook API
body: <p>I am trying to authenticate against OAuth based Quickbook API through a java program which is following,</p>
  
  <pre><code>    OAuthAuthorizer authorizer = new OAuthAuthorizer(consumerKey,
              consumerSecret, accessToken, accessTokenSecret);
      try {
          Context context = new Context(authorizer, apptoken,
                  ServiceType.QBO, realmID);
  
          DataService service = new DataService(context);
          Customer customer = getCustomer();
          service.addAsync(customer, new CallbackHandler() {
  
              @Override
              public void execute(CallbackMessage message) {
                  // TODO Auto-generated method stub
                  System.out.println(message.getAttachableResponse());
              }
          });
      } catch (FMSException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
      }
  </code></pre>
  
  <p>I have provided values for consumer key, consumer secret, access token, access secret token, app token and realmId but still I am getting an exception which is following,</p>
  
  <pre><code>      com.intuit.ipp.exception.FMSException: ERROR CODE:3200, ERROR   
        MESSAGE:message=Exception authenticating OAuth; errorCode=003200; statusCode=401, ERROR DETAIL:null
  </code></pre>
  
  <p>Am I  doing something wrong or missing something ?</p>