A correction makes the immediate problem go away. Containment protects the customer while you learn more. Corrective action removes the cause. CAPA records the decision and verifies effectiveness.
A practical route
Ask whether product is at risk now, whether the cause is known, whether it has happened before, and whether a process change would prevent recurrence. A repeated wrong-revision shipment needs document-control investigation, not a training checkbox.
What good looks like
The process is visible at the point of work. The person doing the task knows the current requirement, the person approving it can see objective evidence, and the owner can tell whether the control worked. Keep the record small enough to complete in the moment: requirement, result, exception, owner, date, and next decision.
The failure mode to avoid
Do not solve a recurring process problem with a longer form alone. Watch one real job, find the handoff that breaks, and change the workflow or responsibility. Then sample the next few records to confirm the change stuck. The output should be a record someone else can verify. Use the CAPA workspace. to keep that chain together.