title: iOS In App Purchase capabilities says: "An App ID with Identifier 'com.example.App' is not available"
body: <p>I have created an iOS App ID in iOS Dev Center under Certificates, Identities, and Profiles and enabled it for In-App-Purchases. Let's say its name is <code>App</code> and the id is <code>com.example.app</code>.</p>
  
  <p>If I view the corresponding app's In-App Purchase capabilities in Xcode 5.0.2 the tool indicates an error and offers to "Add the In App Purchase entitlement to Your App ID" in the form of a "Fix Issue" button. If I press the button I receive this error message:</p>
  
  <blockquote>
    <p>An App ID with Identifier 'com.example.App' is not available. Please
    enter a different string.</p>
  </blockquote>
  
  <p>How can I overcome this problem? The identifier <code>com.example.App</code> seems to be derived from the targets bundle identifier, whose suffix seems in turn derived from the project name. Those should not change.</p>
  
  <p>And why does Xcode not pick up the existing App ID that I've already created in iOS Dev center. It spells app in lower case, but I <a href="https://stackoverflow.com/questions/7688379/does-bundle-id-need-to-be-case-sensitive">understand</a> that shouldn't matter, and in any case it does not seem to be possible to replace it with an upper-case version because this would require deletion of an app id first, which <a href="https://stackoverflow.com/questions/996477/removing-app-id-from-developer-connection">seems impossible</a>.</p>
  
  <p>So how can I fix the issue in Xcode (e.g. by directly editing capabilities) and what is the recommended workflow between Xcode and iOS Dev Center for adding capabilities in the first place?</p>