title: how to fix error 403 when update new tweet to twitter using xcode?
body: <pre><code>Request DBE044D8-3C3D-4122-95FF-F0E2063FB9DF failed with error: Error Domain=HTTP Code=403 "The operation couldn’t be completed. (HTTP error 403.)"
  </code></pre>
  
  <p>that error log is showed like that when I want to update new tweet, I am using this code</p>
  
  <pre><code>- (void) requestSucceeded: (NSString *) requestIdentifier {  
      CLog(@"Request %@ succeeded", requestIdentifier);  
  }  
  
  - (void) requestFailed: (NSString *) requestIdentifier withError: (NSError *) error {  
      CLog(@"Request %@ failed with error: %@", requestIdentifier, error);  
  }
  
  -(void)twit:(NSString *)text{
      CLog(@"test to tweet");
      [_engine sendUpdate:@"hallo"];
  }
  
  - (IBAction)twitter:(id)sender {
      NSString * user=[[NSUserDefaults standardUserDefaults] objectForKey:@"username"]; 
      if(![user isNotEmpty]){
          _engine=nil;
      }
  
      if(!_engine){
          CLog(@"engine create");
          _engine = [[[SA_OAuthTwitterEngine alloc] initOAuthWithDelegate:self] autorelease];
          _engine.consumerKey= kOAuthConsumerKey;  
          _engine.consumerSecret = kOAuthConsumerSecret;  
      } 
  
      if(![_engine isAuthorized]){  
          UIViewController *controller = [SA_OAuthTwitterController controllerToEnterCredentialsWithTwitterEngine:_engine delegate:self];  
  
          if (controller){  
              [self presentModalViewController:controller animated:YES];
              [[BNUtilitiesQuick FrontPageofBadger] presentModalViewController:controller animated:YES];
          }  
      }  
  }
  
  #pragma mark SA_OAuthTwitterEngineDelegate  
  - (void) storeCachedTwitterOAuthData:(NSString *) data forUsername:(NSString *) username {  
      NSUserDefaults          *defaults = [NSUserDefaults standardUserDefaults];  
  
      [defaults setObject:data forKey:@"authData"];
      [defaults setObject:username forKey:@"username"];
  
      [defaults synchronize];
      CLog(@"username:%@", username);
  }  
  
  - (NSString *) cachedTwitterOAuthDataForUsername:(NSString *) username {
      return [[NSUserDefaults standardUserDefaults] objectForKey:@"authData"];
  }
  
  - (void) OAuthTwitterControllerFailed:(SA_OAuthTwitterController *) controller{
      CLog(@"failed");
  }
  - (void) OAuthTwitterControllerCanceled:(SA_OAuthTwitterController *) controller{
      CLog(@"cancel");
  }
  </code></pre>
  
  <p>anyone get that error too? and how to fix this problem?</p>