Recurse (Recursion) is a new feature introduced with Ingress Prime. Recurse is available for agents who have reached L 16. A Recursed agent will start again at L 1 with 0 AP and can again choose the faction they will be part of (Faction Change). However, they will retain most of the perks of L 16 such as the Recharge range, OPR access, Inventory contents etc.
Notably, XM bar capacity is not retained and is the only thing separating Recursed L 8 and L 16 agents.
Recursed agents will have an icon displayed next to their name in Ingress Prime; they are given the Simulacrum medal and their profile page will display their Lifetime AP gained.