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Investment Banking × Compliance — Singapore · published 2026-05-28 · methodology v2.1

Fabricated notice designation for financial holding companies

What the RLB Specialist Panel found

1. Fabricated notice designation for financial holding companies

  • Question (paraphrased to protect IP): Does MAS Notice 637 on risk-based capital adequacy apply to financial holding companies incorporated in Singapore, or is there a separate MAS notice for them, and if so, what is it?
  • Source regulation: MAS Notice 637 (Risk Based Capital Adequacy Requirements for Banks Incorporated in Singapore) (Regulator portal: https://www.mas.gov.sg)
  • What AI assistants typically say: The AI correctly identifies that a separate notice applies to financial holding companies incorporated in Singapore, but then supplies a specific notice designation — presented as "Notice FHC-N637 (Risk Based Capital Adequacy Requirements for Financial Holding Companies)" — that does not correspond to any confirmed MAS instrument.
  • What the regulator actually says: MAS Notice 637 governs risk-based capital adequacy requirements for banks incorporated in Singapore. Separate regulatory instruments issued under the Financial Holding Companies Act govern the capital adequacy framework for financial holding companies, but those instruments carry their own official designations as published on the MAS portal.
  • Why the AI went wrong: The AI appears to have constructed the notice label by analogy — combining the bank notice number (637) with a reference to the Financial Holding Companies Act — rather than retrieving a verified instrument name. The result is a response that is directionally correct (a separate notice does exist) but that supplies a fabricated identifier where a Compliance team needs a precise, verifiable one.
  • Cited source(s):
Impact for this audience

A Compliance team that accepts the AI's fabricated notice designation could cite a non-existent MAS instrument in a regulatory query, a capital adequacy policy covering group entities, or internal legal advice on whether a Singapore-incorporated financial holding company falls within the bank notice's scope. If that incorrect reference reaches MAS — in a capital return, a supervisory questionnaire, or a product approval submission — the firm faces a compliance record requiring correction and potentially demonstrates to MAS that its regulatory research processes are not fit for purpose. Remediation requires locating the correct instrument, revising affected documents, and potentially notifying MAS of the error, all at the firm's cost.

References — raw findings (per AI model)
This finding also affects
Next finding → Finding 2. Mischaracterisation of yellow-highlight convention in MAS amendment notices
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.

Plain text 
RegLeg Specialist Panel (2026). "Fabricated notice designation for financial holding companies — Investment Banking × Compliance — Singapore." Citation ID: . RegLegBrief AI Hallucination Research, published 2026-05-28. https://reglegbrief.com/audiences/sectors/sg/investment_banking/compliance/finding/q-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-v1-010/
APA 7th edition 
RegLeg Specialist Panel. (2026). Fabricated notice designation for financial holding companies [Hallucination finding ]. RegLegBrief AI Hallucination Research. https://reglegbrief.com/audiences/sectors/sg/investment_banking/compliance/finding/q-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-v1-010/
Bluebook / OSCOLA (US + UK legal) 
RegLeg Specialist Panel, Fabricated notice designation for financial holding companies [], RegLegBrief AI Hallucination Research (May 28, 2026), https://reglegbrief.com/audiences/sectors/sg/investment_banking/compliance/finding/q-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-v1-010/.
BibTeX 
@misc{reglegbrief_,
  author    = {RegLeg Specialist Panel},
  title     = {Fabricated notice designation for financial holding companies},
  year      = {2026},
  publisher = {RegLegBrief AI Hallucination Research},
  note      = {Hallucination finding Citation ID: },
  url       = {https://reglegbrief.com/audiences/sectors/sg/investment_banking/compliance/finding/q-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-v1-010/}
}
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