3731197 - Prevent automatic account creation on social login for non-existing users using onBeforeAccountRegister extension

• During accounts.socialLogin with a social provider, if no matching account exists, the platform automatically creates a new account/UID.
• The desired behaviour is to stop the flow for unknown identities and return an error instead of registering a new account.
• Inquiry whether this can be achieved by intercepting the onBeforeAccountRegister event with an extension.
• No specific error message or error code is observed; the issue is the automatic registration itself.

• SAP Customer Data Cloud
• RaaS (Screen-Sets, Site Policies, Schema)
• Social login

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