This is progress, a percentage figure showing how far the domain-wide identity-sync FSM has advanced through its full sequence of stages. This is the number an admin watches climb during a long-running identity resync (for instance, right after a fabric interconnect reboot) to judge whether the operation is actually moving or has hung. A value of 100 means the FSM has fully completed, while a value stuck at, say, 40 for several minutes suggests the current stage is taking unusually long or is blocked.