CAPA (Corrective and Preventive Action) is the quality system’s process for handling deviations: corrective actions remove the root cause of an error that has occurred, so it doesn’t recur; preventive actions remove the risk before the error occurs.
A CAPA is not firefighting with a case number. The chain is: contain and fix immediately (correction), find the root cause (5 Whys, fishbone), implement the countermeasure, and verify the effect over time. Without verification, the CAPA is only a claim.
The most frequent CAPA problem in practice: 80% of actions are “employee re-instructed” — a human cause without a system change. It rarely passes an audit and never prevents the recurrence.
The simplest test of whether a CAPA is real: can you point to the change in the system that makes recurrence hard or impossible — a changed standard, a physical stop, a different sequence? If the answer can only be phrased as “we went through it again”, the cause has not been removed. Give every CAPA a verification date 30-90 days out where you look at the numbers again; a CAPA without a verification date is never really closed.