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Practitioners — Company Secretaries · Last updated 11 Jun 2026 · Hallucination Register
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Finding#1 . Fabricated 'Notice FHC-N637' for financial holding companies

RLB Citation ID: RLB-F-SG-MAS-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-Q010
AI's failure:Exposed Fabrication Risk for Company Secretaries:Regulatory enforcement / professional liability exposure
What the RLB Specialist Panel found

Finding#1 . Fabricated 'Notice FHC-N637' for financial holding companies

  • Citation ID: RLB-H-SG-MAS-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-Q010-Opus47
  • AI's failure: AI confidently issued a fabricated regulatory instrument that does not exist
  • Risk for the Company Secretaries: Professional liability and regulatory enforcement exposure where the published MAS text resolves the question differently For a company secretarial team preparing a board paper on the group's financial holding company structure, an AI that names a parallel 'Notice FHC-N637' as the applicable MAS instrument produces a paper that misstates the regulatory perimeter on a question the board is being asked to consider. Notice 637 itself resolves the question in paragraph 11.2.2: a Reporting Bank that is a subsidiary of a financial holding company subject to similar requirements need not duplicate Part VII compliance. A board paper that instead documents a non-existent parallel notice as the FHC's source of obligation creates a governance record that the regulator's own text contradicts.
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Impact for Company Secretaries in Singapore advising on the MAS Notice 637 (Amendment) 2025 - Risk Based Capital Adequacy Requirements for Banks Incorporated in Singapore

Company secretaries at Singapore-incorporated financial holding companies routinely receive board papers referencing capital-adequacy compliance. The Opus 4.7 fabrication of "Notice FHC-N637" is dangerous in this setting because a board minute or risk-management report citing the non-existent notice could be carried forward into corporate records and external auditor packs. The secretary's responsibility is to confirm that any regulatory instrument named in board documents actually exists and applies to the entity; this requires checking the MAS Notices and Directives register before circulating drafts. If AI-drafted board content is being used, the verification step is non-negotiable.

References — raw findings (per AI model)
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Cite this finding

Each finding has a stable Citation ID (RLB-F-… for aggregated case-study findings, RLB-H-… for raw per-model hallucinations) — like a DOI, the ID always resolves to the canonical finding even if URLs change.

RLB Citation ID: RLB-F-SG-MAS-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-Q010
Plain text Download 
RegLeg Specialist Panel (2026). "Finding#1 . Fabricated 'Notice FHC-N637' for financial holding companies — Practitioners — Company Secretaries." Citation ID: RLB-F-SG-MAS-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-Q010. RegLegBrief AI Hallucination Research, published 2026-06-11. https://reglegbrief.com/regulators/j3/sg/MAS/NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025/practitioners/company-secretaries/finding/SG-MAS-SG-001-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-v1-010/
APA 7th edition Download 
RegLeg Specialist Panel. (2026). Finding#1 . Fabricated 'Notice FHC-N637' for financial holding companies [Hallucination finding RLB-F-SG-MAS-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-Q010]. RegLegBrief AI Hallucination Research. https://reglegbrief.com/regulators/j3/sg/MAS/NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025/practitioners/company-secretaries/finding/SG-MAS-SG-001-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-v1-010/
Bluebook / OSCOLA (US + UK legal) Download 
RegLeg Specialist Panel, Finding#1 . Fabricated 'Notice FHC-N637' for financial holding companies [RLB-F-SG-MAS-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-Q010], RegLegBrief AI Hallucination Research (June 11, 2026), https://reglegbrief.com/regulators/j3/sg/MAS/NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025/practitioners/company-secretaries/finding/SG-MAS-SG-001-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-v1-010/.
BibTeX Download 
@misc{reglegbrief_RLB_F_SG_MAS_NOTICE_637_CAPITAL_ADEQUACY_BANKS_2025_Q010,
  author    = {RegLeg Specialist Panel},
  title     = {Finding#1 . Fabricated 'Notice FHC-N637' for financial holding companies},
  year      = {2026},
  publisher = {RegLegBrief AI Hallucination Research},
  note      = {Hallucination finding Citation ID: RLB-F-SG-MAS-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-Q010},
  url       = {https://reglegbrief.com/regulators/j3/sg/MAS/NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025/practitioners/company-secretaries/finding/SG-MAS-SG-001-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-v1-010/}
}
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