## When Does Each Modified Opinion Apply?
The type of modified opinion depends on two independent axes:
1. Nature of the issue — Was sufficient & appropriate audit evidence (S&A AE) obtained, OR is there a material misstatement (MM)?
2. Pervasiveness — Are the effects (or possible effects) pervasive on the financial statements?
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### Decision Matrix
| Opinion | S&A AE Obtained? | Material Misstatement? | Pervasive? |
|---|---|---|---|
| Qualified | Yes (MM found) | Yes | No |
| Qualified | No (limitation) | Yes (would be) | No |
| Adverse | Yes (MM found) | Yes | Yes |
| Disclaimer | No (limitation) | Yes (would be) | Yes |
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### Reading the Matrix
Qualified opinion is used in both types of problems (MM found, or evidence not obtained), but only when effects are not pervasive — i.e., limited to specific areas.
Adverse opinion is the "worst" conclusion where evidence IS obtained and a pervasive MM is confirmed — the auditor can say definitively: the FS are misleading.
Disclaimer of opinion occurs when evidence CANNOT be obtained and the possible effects would be pervasive — the auditor cannot form any opinion at all.
> Key insight: Adverse vs. Disclaimer both require pervasiveness, but Adverse = evidence obtained (auditor knows it's wrong); Disclaimer = evidence not obtained (auditor cannot know).