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All of a sudden the sendVerificationCode auth (/identitytoolkit/v3/relyingparty/sendVerificationCode) POST call returns 503 backendError.

I couldn't find the error code in any of the Google API documentation as well. Appreciated any help. Thank you.

{
  "error": {
    "code": 503,
    "message": "Error code: 39",
    "errors": [
      {
        "message": "Error code: 39",
        "domain": "global",
        "reason": "backendError"
      }
    ]
  }
}
J K
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    This certainly is a Server error. I think the best way to find more information about the cause of this error is by reaching out to the [Firebase Support](https://firebase.google.com/support) – oakinlaja Oct 07 '20 at 15:48
  • What's the purpose of the link in the question? It's not accessible and and is dead, which doesn't appear to be related to the actual question. Or is it? – Jay Oct 07 '20 at 19:18
  • @jay the url is the one called by the firebase auth from client. – J K Oct 07 '20 at 22:57
  • Did you ever figure out what's wrong? I am having the same issue, started suddenly occurring about an hour ago. – enlightenedOne Oct 08 '20 at 00:20
  • Nope. Its intermittent but persistent. – J K Oct 08 '20 at 03:57
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    Thanks, @jkumaranc. Mine started working again too. I opened a ticket with Firebase Support. I will report back when I hear something. – enlightenedOne Oct 08 '20 at 04:29
  • Thanks @enlightenedOne. Appreciate that. – J K Oct 08 '20 at 22:45
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    @jkumaranc - I just received the response and it's what I predicted. Basically, they say it happens when you make too many authentication requests from a single IP in a short period of time. Which I did during my testing. They suggested whitelisting your phone number in the Firebase console. This resolved my issue, and hope it will resolve yours. – enlightenedOne Oct 09 '20 at 14:48
  • Thanks @enlightenedOne. Thats a great news. We will try the same. – J K Oct 11 '20 at 23:25

0 Answers0