rar

To implement rich authorization requests (RAR) for banking transactions, you must integrate four phases into your existing process: build authorization details dynamically, enforce subset rules at the gateway, surface details for the decision process, and execute the final decide phase.

RFC 9396 defines Rich Authorization Requests (RAR) to provide precise authorization with specific constraints. You need it for secure fund transfers when your transaction processing system requires structured, fine-grained permission details rather than simple scope-based access.

You enforce RAR subset rules at the gateway by integrating an enforcement phase directly into your existing authorization process. This validates the specific action constraints defined in the rich authorization requests before reaching the decision process.

Yes, you can control rich authorization request functionality using feature flags. This manages the inclusion of RAR processing dynamically, enabling or disabling the build, carry, enforce, and decide phases within your transaction system as needed.

A limitation of using RAR is that it requires integrating the build, carry, enforce, and decide phases into your existing authorization process. This strict architectural requirement means it cannot be simply layered onto systems lacking gateway enforcement capabilities.