Create a system app with fabric Identity and ensure the following details are available before starting the authentication flow. client-id - A unique ID that represents the system app, and is required for OpenID Connect authentication flows. client-secret - An app-specific secret that allows fabric Identity to validate the system app. This secret is mandatory for system apps to integrate with fabric Identity. Authorization Url - The fabric Identity HTTP endpoint that the system app communicates with to get its access token. Every fabric merchant is provided with a unique URL. Follow Getting System app Credentials guide to obtain your system app credentials.
If you have troubles obtaining client-id, client-secret, or Authorization Url, contact fabric support for assistance.