title: How to create new key for FCM?
body: <p>In GCM was feature to create new API key, so on my current project different keys were used for staging and prod environment. But now according to info from <a href="https://developers.google.com/cloud-messaging/http-server-ref#error-codes" rel="nofollow noreferrer">here</a> new keys created for GCM are not valid. </p>
  
  <p>How can I create few FCM keys for one project?</p>