What is CAPA effectiveness verification, and why does everyone skip it?

The step that turns an assertion into a control

Most CAPA systems close an action when the action is performed. That is not a control. It is a record that somebody did something, and it contains no information about whether the something worked.

Verification asks the only question that matters: has the problem stopped recurring? An action that was performed diligently, documented properly, and did not work is indistinguishable — in a system without verification — from one that fixed everything.

When to schedule it, and what evidence looks like

Schedule the check when you RAISE the action, not when you close it. This matters more than it sounds: an organisation that decides after the fact whether to verify will reliably decide not to, because by then the action feels finished and the check feels like doubt.

The interval has to be long enough for recurrence to be meaningful — a quarter for something that recurs quarterly, a full season for something seasonal. And the evidence is the next few cycles of the same measurement: the inspection that now passes, the reading that has stayed in range, the complaint category that has gone quiet.

The metric it produces is the honest one

Verification generates an effectiveness-failure rate — the share of actions that were closed and did not hold. Almost no organisation knows this number, and it is the single most informative thing about a quality system.

Read it against time-to-close. Fast closures alongside rising repeat findings is the signature of a fake-closure culture, and it is the one pattern that cannot be fixed by trying harder, because trying harder is what produced it.

Terms

• Root Cause Analysis