ETQ029
Select each corroborative procedure for the distinct uncertainty it resolves, eliminating any step that reproduces rather than extends the evidentiary base.
CyberTRIZ analysis · Audit contradiction ETQ029 · one of 8,235 worked contradictions published by CyberTRIZ.AI
Regulations
Evidence Corroboration vs Duplicate Testing
Business ContextCorroborating evidence from different sources can strengthen assurance and expose inconsistencies. When auditors repeatedly test the same condition through procedures that provide little independent information, corroboration becomes duplication rather than additional assurance.
Audit TRIZ ResolutionSelect corroborative procedures according to the distinct uncertainty each source resolves. Additional testing should contribute independent information about authenticity, completeness, accuracy, occurrence, or another relevant characteristic rather than reproduce the same evidentiary function.
Applicable TRIZ Principles
Principle 2 – Taking Out removes repetitive procedures that do not increase assurance.
Principle 5 – Merging combines complementary evidence into a unified conclusion.
Principle 3 – Local Quality directs additional corroboration toward evidence with meaningful uncertainty.
Expected Outcome
Stronger evidence triangulation
Reduced duplicate testing
Lower engagement effort
Better evidentiary efficiency
Decision Indicators
Several procedures confirm essentially the same information.
Additional testing rarely changes confidence in conclusions.
Auditors repeat work because methodology requires multiple procedures regardless of evidence quality.
Corroboration is measured by procedure count rather than independent support.
Engagements contain substantial overlapping evidence.