When Apple updates a product that affects a recommended system, customers will see a note on the Recommended Systems page saying that the system is currently unavailable, and the store administrator will receive an email alert message.
To update a recommended system bundle, use the Edit or Delete buttons to make the necessary changes.
When you're finished, click Publish to save your changes, which will remove the "unavailable" message(s) on your Recommended Systems page.
You only need to make changes using the Custom Store Admin Tool when your recommended systems are affected.