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Contestability

By Updated

The ability of a person affected by an AI-supported decision to challenge it and obtain a response that can change it. GDPR Article 22(3) gives a right to contest solely automated decisions 1, and the OECD principles ask that people adversely affected can challenge an output 2.

Developed in
ch. 16, The legal hooks for explanations
ch. 05, Pattern: Decision Notice & Contest Path
Chapters
ch. 05, Patterns · ch. 12, Governance Program · ch. 16, Fairness & XAI
Contrast with
Recourse · Contest path
Source
2 numbered references, listed below

Where it is used

2 chapters of the Body of Knowledge use the term. Each link opens the first section that does.

Contestability: mentions per chapter2 mentions of the term across 2 of the 23 chapters of the Body of Knowledge; the chapters the glossary cross-references are drawn solid.Other chapterCross-referenced, not named05 Patterns012 Governance Program016 Fairness & XAI021 AI Laws Worldwide: 1 mention21 AI Laws Worldwide122 Principles & Standards: 1 mention22 Principles & Standards1No mentions in the other 18 chaptersSource: the Body of Knowledgev0.5.0
Contestability: mentions per chapter2 mentions of the term across 2 of the 23 chapters of the Body of Knowledge; the chapters the glossary cross-references are drawn solid.Other chapterCross-referenced, not named000102030405060708101112131415161718192021 AI Laws Worldwide: 1 mention12122 Principles & Standards: 1 mention12223Source: the Body of Knowledge v0.5.0
Mentions per chapter How often each chapter names the term, with the chapters the glossary cross-references drawn solid. The longest bar is where to read the term in use; bars spread across many chapters mark a term that runs through the discipline.
Mentions as a table
Mentions of Contestability per chapter
ChapterMentionsCross-referenced
00 Preface0No
01 Definition0No
02 Why Now0No
03 Values & Principles0No
04 The Stack0No
05 Patterns0Yes
06 The Role0No
07 Maturity Model0No
08 Regulatory Map0No
10 Reading List0No
11 AI Defined0No
12 Governance Program0Yes
13 Risk Management0No
14 Development0No
15 Deployment0No
16 Fairness & XAI0Yes
17 Incidents0No
18 EU AI Act0No
19 Privacy & AI0No
20 Existing Law0No
21 AI Laws Worldwide1No
22 Principles & Standards1No
23 AI Agents0No
Contestability: related terms and patternsThe term at the centre; related terms on solid edges, the terms it is contrasted with on dashed edges, and the patterns that use it most in the colour of their layer.RelatedContrastContestabilityRelated terms (2)Decision notice · RelatedDecision noticeReason code · RelatedReason codeContrast with (2)Contest path · ContrastContest pathRecourse · ContrastRecourse
Contestability: related terms and patternsThe term at the centre; related terms on solid edges, the terms it is contrasted with on dashed edges, and the patterns that use it most in the colour of their layer.RelatedContrastRelated terms (2)Decision notice · RelatedDecision noticeReason code · RelatedReason codeContrast with (2)Contest path · ContrastContest pathRecourse · ContrastRecourseContestability
The term's neighbourhood Terms related to this one on solid edges, terms it is often confused with on dashed edges, and the patterns that use it most in the colour of their layer. Follow a dashed edge to check the distinction before you use either term.
Neighbourhood as a table
Neighbourhood of Contestability
FamilyItemRelation
Related termsDecision noticeRelated
Related termsReason codeRelated
Contrast withContest pathContrast
Contrast withRecourseContrast
  • Decision notice

    The notice a person receives at the point of an automated or AI-assisted decision, rendered from a versioned template and the decision record: that a system…

  • Reason code

    A stable, human-readable statement of a principal factor behind an adverse decision, mapped from the factors the model actually scored and versioned with the…

Sources

  1. [1] Regulation (EU) 2016/679 (General Data Protection Regulation) (Arts. 4(1), 4(5), 4(7), 4(8), 4(12), 4(14), 5, 6, 9, 12(3), 22, 25, 28(2) and 28(4), 30, 33, 35; Recital 26). Publications Office of the EU (EUR-Lex). 2016-04-27. https://eur-lex.europa.eu/eli/reg/2016/679/oj/eng (verified: primary)
  2. [2] Recommendation of the Council on Artificial Intelligence, OECD/LEGAL/0449 (adopted 22 May 2019; AI-system definition revised 8 Nov 2023; revised 3 May 2024; five principles and five recommendations; 1.3 enables people adversely affected to challenge an output; definitions of AI system, lifecycle and AI actors). OECD. 2024-05-03. https://legalinstruments.oecd.org/en/instruments/OECD-LEGAL-0449 (verified: primary)

Definitions of legal terms paraphrase the cited text, which governs. Dated statements are as of .

Cite this term

García Aibar, J. (2026). Contestability. In AI Governance Engineering: The Thesis & Body of Knowledge (v0.5.0), Glossary. https://doi.org/10.5281/zenodo.22956197. https://aigovernanceengineer.com/glossary/contestability. CC BY 4.0

BibTeX

@misc{aige2026contestability,
  author  = {Jorge García Aibar},
  title   = {{Contestability}},
  note    = {Glossary, AI Governance Engineering: The Thesis \& Body of Knowledge, version 0.5.0},
  year    = {2026},
  doi     = {10.5281/zenodo.22956197},
  url     = {https://aigovernanceengineer.com/glossary/contestability}
}