This object reports the number of the access control list (ACL) that was violated by packets between a source and destination as recorded in the checkpoint accounting matrix, a separate accounting table used for periodic snapshot comparisons. An administrator checks this value when reconciling checkpoint accounting data to identify which ACL is responsible for flagged traffic in that particular snapshot. For example, ckactViolation reporting ACL 150 in the checkpoint table helps the admin correlate a spike in denied traffic to a specific access-list rule during that accounting interval.