Use the notification instructions for the exact saved provider account.
1. Open the intended account
Go to Payment Methods, choose the provider, and use Edit beside the correct account. Check its mode and non-secret account identifier.
2. Read its own instructions
Look for the displayed webhook or callback setup. Some providers configure it on save; others require you to copy an assigned URL and secret.
3. Copy only the assigned details
Use the URL and secret displayed for that account and environment in the provider’s configuration. Do not guess a URL or reuse another business’s secret.
4. Check the resulting status
Save the required setup and review the provider’s event history if an actual notification is missing. These payment notifications are separate from outgoing event webhooks under Integrations.