title: Firebase error: "Authentification key is not active"
body: <p>Prior a week from today, I had code that was working fine on Firebase Cloud Functions.</p>
  
  <p>I've tried numerous solution to debug the problem but have run into this wall every time my code is activated:</p>
  
  <pre><code>{"errors":[{"code":20,"message":"Authentification key is not active"}
  {"code":21,"message":"No permission for this authentication key"}]}
  </code></pre>
  
  <p>One solution had changed this error code into another:</p>
  
  <pre><code>{"error":{"code":403,"message":"Identity Toolkit API has not been used in project xxxxxx before or it is disabled. Enable it by visiting https://console.developers.google.com/apis/api/identitytoolkit.googleapis.com/overview?project=xxxxxx then retry. If you enabled this API recently, wait a few minutes for the action to propagate to our systems and retry.","errors":[{"message":"Identity Toolkit API has not been used in project 818729994826 before or it is disabled. Enable it by visiting https://console.developers.google.com/apis/api/identitytoolkit.googleapis.com/overview?project=xxxxxx then retry. If you enabled this API recently, wait a few minutes for the action to propagate to our systems and retry.","domain":"usageLimits","reason":"accessNotConfigured","extendedHelp":"https://console.developers.google.com"}],"status":"PERMISSION_DENIED"}}
  </code></pre>
  
  <p>Which leads me to believe that this is authenticated related even though the code is hosted in a Google domain which I assume should be automatically authenticated.</p>