firebase_auth/missing-client-identifier] This request is missing a valid app identifier, meaning that Play Integrity checks, and reCAPTCHA checks were unsuccessful. Please try again, or check the logcat for more details

[RamzanTingku]

Hi, I am getting this error when trying to verify phone number with OTP.

Here is what I did to solve this:

1. Added both release and debug SHA 1 key to Firebase App Settings
2. Added SHA 1 to Google API Key and made that unrestricted
3. Registered Play Integrity in FIrebase

Here are some of my code snippets:

`void main() async {
runZonedGuarded<Future>(() async {

WidgetsFlutterBinding.ensureInitialized();
await Firebase.initializeApp();
await FirebaseAppCheck.instance.activate(
  androidProvider: AndroidProvider.playIntegrity,
  appleProvider: AppleProvider.debug
);
runApp(MainApp());

}, (error, stack) {
FirebaseCrashlytics.instance.recordError(error, stack, fatal: true);
});
}`

`
await FirebaseAuth.instance.verifyPhoneNumber(

    phoneNumber: 'XXXXXXXXXXX',
    verificationCompleted: (PhoneAuthCredential credential) {},
    verificationFailed: (FirebaseAuthException e) {},
    codeSent: (String verificationId, int? resendToken) {},
    codeAutoRetrievalTimeout: (String verificationId) {},
  );

`

after that it tried to load captcha, but it returns from browser with verifying and show this error:
firebase_auth/missing-client-identifier] This request is missing a valid app identifier, meaning that Play Integrity checks, and reCAPTCHA checks were unsuccessful. Please try again, or check the logcat for more details

I am stuck in at app production. Can you please help me with this?