This counts individual TDM path-layer code-violation events, rather than affected seconds, on the circuit carried over this pseudowire. CVP on this PW lets the admin see whether path errors are a dense burst of violations packed into few seconds or a low steady trickle, a distinction the seconds-based ESP counter on the same PW can't make on its own -- and this specific object covers the current, still-open 15-minute interval -- a value that keeps climbing until the interval closes and rolls into history. For example, so far in the current, still-running 15-minute interval, this pseudowire might show this counter at 15 -- a concrete count the admin can trend against neighboring bins to judge whether the condition it reflects is worsening.