Getting 503 error in Firebase phone authentication

Syed Kashif Ali

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Oct 27, 2023, 12:54:06 PM10/27/23

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Hello all,
I am a newbie to Firebase. Getting error 'Failed to load resource error: the server responded with a status of 503 () https://www.googleapis.com/identitytoolkit/v3/relyingparty/sendVerificationCode?key=mykey' when try send OTP using Firebase phone authentication method. Shall be very thankful if someone could help.

Below is the detailed error message.
{"error":{"code":503,"message":"Error code: 39","errors":[{"message":"Error code: 39","domain":"global","reason":"backendError"}]}}

Here is my code:

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Test</title>
</head>
<body>
<div class="row mt-3">
<form>
<h3>Enter phone no</h3>
<input type="text" id="number" value="enter verification">
<button type="button" value="Submit" onclick="phoneAuth();">Send Code</button>
</form>
</div>
<div class="row mt-3" id="recaptcha-container"></div>
<div class="row mt-3">
<form>
<h3>Enter OTP</h3>
<input type="text" id="verificationCode" value="enter OTP">
<button type="button" value="Submit" onclick="codeverify();">Verify OTP</button>
</form>
</div>

<script src="https://www.gstatic.com/firebasejs/6.3.3/firebase-app.js"></script>
<script src="https://www.gstatic.com/firebasejs/6.3.3/firebase-auth.js"></script>
<script>
var config = {
apiKey: "mykey",
authDomain: "xxxxxx",
projectId: "XXXX",
storageBucket: "XXXX",
messagingSenderId: "XXXX",
appId: "XXXX"
};
firebase.initializeApp(config);
</script>
<script>
window.onload = function () {
render();
};

function render() {
window.recaptchaVerifier = new firebase.auth.RecaptchaVerifier('recaptcha-container');
recaptchaVerifier.render();
}

// Function for phone authentication
function phoneAuth() {
var number = "+92" + document.getElementById('number').value;
firebase.auth().signInWithPhoneNumber(number, recaptchaVerifier)
.then(function (confirmationResult) {
window.confirmationResult = confirmationResult;
console.log(confirmationResult);
alert("Message Sent");
})
.catch(function (error) {
console.error(error);
alert(error.message);
});
}
// Function for verifying the code
function codeVerify() {
var code = document.getElementById('verificationCode').value;
confirmationResult.confirm(code)
.then(function (result) {
alert("Message Verified");
var user = result.user;
console.log(user);
//window.location.href = "/index/registration";
})
.catch(function (error) {
console.error(error);
alert(error.message);
});
}
</script>
</body>
</html>

Please tell what i am doing wrong or what do i need to do in my firebase project/service settings in the backend to remove this error.
Shall be very thankful.

Kashif

Joshua Aruokhai

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Oct 30, 2023, 2:18:34 PM10/30/23

to Firebase Google Group

It seems, there is a quota issue, i guess you have exhausted your quota limit, you can verify if that is the case

usama safi

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Oct 31, 2023, 5:09:30 PM10/31/23

to Firebase Google Group

I too got the Error: "Error code: 39", and on a created test number everything work, but not on a real mobile number.
I've checked the quota limits and none of them are over the threshold.

I guess some kind of update to Authentication service from Firebase did that.
I've sent a message to support, waiting for a reply.

Syed Kashif Ali

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Oct 31, 2023, 5:09:30 PM10/31/23

to Firebase Google Group

Yes, you are right Joshua. The issue is related to quota that expired during testing. Got the same error when i used the Firebase web modular API for phone authentication. If i whitelist a phone number by

entering it into ficticious numbers, i don't get an error.

Stony Flavor

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Oct 31, 2023, 8:35:59 PM10/31/23

to fireba...@googlegroups.com

Mobile has two authentication #s

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Syed Kashif Ali

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Nov 3, 2023, 1:32:03 PM11/3/23

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Hi,

My issue resolved which was related to Firebase blacklisting a cell number due to accessive testing that i did to test the code. I used a new number and OPT sent out successfully.