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Both the Policy Management Service & Enrichment Service endpoint is configured in the Kong gateway. Here Kong gateway acts as the R1 Interface, which means all these services can only be accessed through Kong gateway.
Keycloak Realm
Follow the Keycloak guideline to create Realm, user, role and assign the user to the role that you have created. Once this is done add the realm configuration as policy to the Istio config
Istio Policy