Sign in with apple /consent return 400

Ive created primary app id and service id in Apple Developer Portal - Identifier and enabled "Sign in with Apple". However after construct the redirect url: https://appleid.apple.com/auth/authorize?response_type=code&response_mode=form_post&client_id=com.bolt.account.test.client&redirect_uri=https://account.bolt.com&state=merchant_token=%26provider=apple&scope=name%20email

and login to apple, an 400 error returned from /consent endpoint with the following error message:

code: "-310003"
message: "Sign in with Apple isn't allowed for the app."
suppressDismissal: false

What should I look to verify if the sign in with Apple is enabled or not? Thanks in advance for any suggestions!

Sign in with apple /consent return 400
 
 
Q