D6 is Redundant and Add Judgement at D5

8D Problem Solving (Eight Disciplines)
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reader1, China

D6 is Redundant and Add Judgement at D5

If review the chart, we find this may change as,
If verify the corrective action at D5, then D7, else identify possible soluton(red box).


Ondrej Durej
Management Consultant, Slovakia

Verification versus Validation in 8D Problem Solving

You must realize the difference between verification and validation:
Roughly speaking VERIFICATION means that you will try whether an intended corrective action works and VALIDATION means that you will confirm that it really works long term.
Verification of a corrective action should be done before or during its implementation. Obviously you will not implement an unworkable corrective action.
Validation of a corrective action should be done after the implementation of the corrective action to confirm its effectivity (that it really works) long term.

Theo Villella
Business Consultant, United States

D5 and D7 are very different

D5 and D7 are very different. D5 happens before the solution is implemented; it is the work done to ensure the solution will be effective and permanent. D6 is when we implement it. D7 is sharing lessons learned to prevent reoccurrence everywhere it may apply. Operative words permanent then pervasive to ubiquitous.


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Add a D0 phase to 8D Problem Solving
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Difference Between 8D and 6 Sigma? And Commonalities?
8D Problem Solving Examples
👀D6 is Redundant and Add Judgement at D5
What Is, What is Not
Is there a 9th D in 8D Problem Solving?
Why is Structured Problem Solving Taking Too Long?
Does 8D Problem Solving Work with 3rd Party?
Should D1 and D2 Be Changed?
The Key to Intelligent Solving
8D = Closed Loop Process
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