title: Firebase Cloud Messaging generate a new Sender ID
body: <p>I'm implementing a Java Server App to connect to the FCM Server using the XMPP connection. In the <a href="https://firebase.google.com/docs/cloud-messaging/server#connecting" rel="nofollow noreferrer">documentation</a> it tells me that I should use a different FCM sender ID to avoid any risks of sending test messages to production users or sending upstream messages from production traffic over test connections.</p>
  
  <p>But I can't seem to find this option in Firebase Console. I can only create a new Server key. Any ideas?</p>