Validate rejection outcomes on reviewed documents: What is the decisive next step?
A drift signal requires reviewed outcome evidence before deciding whether quality actually deteriorated.
The question
A financial document processor shows a 12% rise in rejected-document rates after a supplier changed scan formats. The rise is a drift signal, but rejection quality has not been checked. What is the decisive next step?
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- Validate rejection outcomes on reviewed documents. ✓Reviewing representative documents can determine whether the signal reflects genuine quality loss, a format effect, or valid rejection decisions.
- Continue tracking the rate without investigating its effect.Monitoring preserves the signal but does not establish impact or support an evidence-based corrective response.
- Revert immediately.Reversion may eventually be appropriate, but the rate change alone does not show whether quality worsened or the new formats are validly rejected.
- Raise the rejection threshold before reviewing outcomes.Changing the threshold without validation could increase missed defects or accept unsuitable documents while leaving the cause unresolved.
The trap
Treat distribution shifts as investigation triggers, not proof that outcomes have worsened. How to remember it
A drift signal requires reviewed outcome evidence before deciding whether quality actually deteriorated.
How many of these would you get right?
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