regarding DEVELOPER_ERROR in Build AAB android

[Naol-bm]

for anyone encounters this issue in production for internal test, consider migrating to Firebase and adding the Google SHA-1 keys to it. I struggled with this error for a day, but after switching to Firebase, it worked perfectly. For the webclientid, use the client_id from the client_type: 3 in the google-services.json file provided by Firebase.

[GowthamResbee]

Firebase google-services.json contains multiple client IDs — but for AAB builds, Firebase alone isn’t enough. You must register and configure the correct OAuth Client ID in Google Cloud Console, tied to your Play App Signing SHA-1.

Solution:

If you're using @react-native-google-signin/google-signin with Firebase Auth in a React Native app and it's only failing on AAB builds (production), here's what worked for me:

Key Fix:
For Debug Builds/Local Testing: (May not work for others)
Use the client ID with "client_type": 3 from your google-services.json.

For Production (AAB Build):

You must use the OAuth 2.0 Web Client ID created in Google Cloud Console, not the Android client ID.

If you don’t already have a matching Web Client ID:

Go to Google Cloud Console

Create a new OAuth 2.0 Client ID (Web Application)

Use the same package name

Then update your app config: