This tracks the raw count of Coding Violations -- individual BIP-8 (B3 byte) parity mismatches -- detected on this SONET/SDH path since the start of the current day, counted per error rather than per second. Because CVs count every individual bit-error event rather than just the seconds they fell in, a handful of very bursty seconds can drive this number into the thousands even while the ESs/SESs counters for the same day stay comparatively low, which helps distinguish scattered noise from a dense burst. A CurrentDay CVs reading of 5,000 against a default alarm threshold of 250 for this path would point to a serious signal-quality problem, such as a degrading laser or a fiber bend, well before the day's bucket even finishes.