Can I build a custom Expo client to test Apple Sign In with my own credentials?

I want to check our configuration (credentials, keys, appIDs) on Apple Developer is correct.
So I build a custom Expo client and also follow the steps to setup AppleAuthentication.

But when I run our react native app on custom Expo client.
It always show the following error. Error Code 1000

However, Sign In with Apple work fine on regular Expo Go Client. (with Expo credentials)

I didn’t see any explanation about how can I test my own credentials on Expo Client.

Is it possible?
I don’t want to test it on a standalone app.