Productivity
Run an 8D
Containment, root cause and verified corrective action, in the customer's format.
Fill it in
What failed, where, and what the customer saw.
Before analysis, because parts are still shipping.
With data, not with a statement of intent.
Your prompt
Run the 8D. [the escape] Contain FIRST and say what you did, with dates and quantities. Parts are still moving while the analysis happens, and an 8D that arrives with a beautiful root cause and no containment is a report the customer reads angrily. Find the root cause with evidence, and answer both questions: why it happened, and why it escaped. Those are different failures with different fixes, and reports that answer only the first are why the same escape recurs. Verify the corrective action with DATA from after it was implemented. "Training completed" is not verification, and neither is a statement of intent. Say where else this could apply. That section is what turns one 8D into prevention.
Use Run an 8DOpens with everything above already filled in.
Why this works
An 8D that arrives with a beautiful root cause and no containment is read angrily, because parts were still moving. This contains first, answers both why it happened and why it escaped, and verifies with data from after the fix.