What if auditee or client reject our finding?

What should we do when we come up with the situation that the auditee reject our finding. As a senior auditor, you’re already analysis that the finding you give to the client was correct. All of previous documentation also already stated. But the client insists that he or she is right? What should we do: never make a deadlock situation, is the answer. Always provide room for negotiation, and here is ten tips from IIA chapters in the US how to better negotiate.

1. Don't make all your demands up front.
2. Don't reveal your true deadline to others.
3. Take advantage of the "good guy, bad guy" scenario.
4. Rely on the power of competition.
5. Attack problems, not people.
6. Put yourself in the other person's shoes
7. Give recognition when due.
8. Try the "fait accompli tactic."
9. Focus on minor issues first.
10. Feint (look to the left, move to the right).

The ten negotiating strategies were incorporated into a survey questionnaire, which was sent to a sample of internal auditors from IIA chapters in the U.S. detail at here

If we certainly believe that the negotiation is the key, then you should practicing a lot to improve your negotiation skill.