Unlike a simple string, RAR uses the authorization_details parameter to send structured JSON objects. This allows you to define: Transaction Limits: "Authorize a payment of exactly $50." Resource Specifics: "Access only Account ID #52638."
"Allow 'read' and 'initiate' but not 'delete'." 52638 rar
If you'd like, I can for a specific platform or focus on a particular use case, such as: Open Banking implementation Technical walkthrough for developers Executive summary for project managers draft-ietf-oauth-rar-05 Unlike a simple string, RAR uses the authorization_details