Aster Manufacturing distinguishes its risk appetite, the broad level of risk it will pursue, from its risk tolerance, the acceptable variation around specific objectives. An auditor reviews a plant whose scrap-rate objective is 2 percent with a stated tolerance of plus or minus 0.5 percentage points; the current scrap rate is 3.1 percent and management calls it acceptable. How should the auditor interpret this situation?
- AThe scrap rate is within tolerance because a single plant's performance is judged against the organisation's overall appetite rather than the objective-level tolerance band.
- BThe scrap rate of 3.1 percent breaches the stated tolerance band around the objective, so management's claim that it is acceptable warrants a finding and follow-up on the response. Correct
- CThe scrap rate is acceptable provided management documents a revised objective of 3 percent, which the auditor should draft and recommend to the plant leadership team.
- DThe scrap rate cannot be assessed because tolerance applies only to financial objectives, leaving an operational metric such as scrap outside any measurable boundary.
Why A is wrong: This confuses appetite with tolerance; tolerance is measured against the specific objective, so judging the plant against broad appetite is the wrong yardstick and produces a false pass.
Why B is correct: Tolerance defines acceptable variation around a specific objective; 3.1 percent sits well outside the 1.5 to 2.5 percent band, so treating it as acceptable is inconsistent with the stated tolerance and correctly raises a finding.
Why C is wrong: Resetting the objective to fit performance is a management decision, and drafting it for them blurs the assurance role; the tolerance breach is not resolved by moving the target, so this is wrong.
Why D is wrong: Tolerance applies to operational as well as financial objectives, so the claim that scrap falls outside any boundary is incorrect and would wrongly excuse the exception from evaluation.