title: StoreKit In App Purchase invalid product identifiers
body: <p>I am getting an empty array of product identifiers from <code>SKProductsRequest</code>.</p>
  
  <p>I did the following steps:</p>
  
  <ol>
  <li><p>Created a In App Purchase Test User account under 'Manage Users' in iTunes Connect</p></li>
  <li><p>Created some in app purchase products under 'Manage Your In App Purchases'. </p></li>
  <li><p>Loaded the app onto the iPhone, went to Settings → Store and logged out of the regular store</p></li>
  <li><p>Set a breakpoint in the <code>(void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response</code> callback</p></li>
  </ol>
  
  <p>All the submitted Product ID's are in the response's <code>invalidProductIdentifiers</code> property. When submitting the request I tried both the Product IDs created during step 2 as well as those IDs prefixed with the Bundle ID.</p>
  
  <p>Thanks in advance,</p>
  
  <p>Raghu</p>