This Gauge counts Coding Violations (BIP-8) accumulated at the Path layer during the current 15-minute interval, the fine-grained bit-error-density metric for end-to-end path connectivity. An admin cares because Path-layer CV trends reveal error density specific to end-to-end path processing, useful for spotting a path degrading gradually before it crosses a per-second alarm threshold, distinct from Section/Line-layer physical errors. For example, a slowly climbing Path CV count over several consecutive intervals, with Section and Line layers staying clean, flags a developing path-level issue worth investigating even before any SES appears.