One action, several policy layers

An airline rebooking can be within a corporate recovery mandate yet outside a spending limit. It may also involve partner restrictions, passenger data and the need to keep a family together.

A policy cascade preserves scope and ownership across these layers. Local or temporary exceptions need explicit authority and expiry; they should not silently override unrelated mandatory controls.

When applicable requirements conflict, stop or seek an authorised decision. The useful output is an explainable decision about this action, together with the evidence of the rules that shaped it.