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Practitioners — Public Auditors · published 2026-05-28 · methodology v2.1

Subject matter of Annex 6C in consolidated MAS Notice 637

What the RLB Specialist Panel found

4. Subject matter of Annex 6C in consolidated MAS Notice 637

  • Question (paraphrased to protect IP): What does Annex 6C of the consolidated MAS Notice 637 address?
  • Source regulation: MAS Notice 637 — Risk Based Capital Adequacy Requirements for Banks (Regulator portal: https://www.mas.gov.sg)
  • What AI assistants typically say: AI tools described Annex 6C as addressing a prudent valuation framework — specifically, the methodology and criteria a reporting bank must apply when prudently valuing fair-valued financial instruments, framed around additional valuation adjustment concepts drawn from the broader Basel III regime.
  • What the regulator actually says: No regulator excerpt was available in the materials reviewed. Practitioners should consult the consolidated MAS Notice 637 directly to confirm what Annex 6C covers.
  • Why the AI went wrong: The AI constructed its response by reasoning from the general Basel III framework structure — where Part VI commonly includes market risk and valuation-related topics — rather than retrieving the actual content of Annex 6C from the MAS notice. No source passage was cited to support the characterisation. The description may be consistent with one reading of Basel III annex conventions in general, but carries low confidence when applied to the specific MAS notice structure without textual support.
  • Cited source(s):
Impact for this audience

A public auditor who accepts the AI's characterisation of Annex 6C without verification may structure audit procedures around the wrong set of valuation requirements. If Annex 6C in fact governs a different topic within Part VI of MAS Notice 637, the auditor will have tested an incorrect obligation and may have left the actual Annex 6C requirement entirely unreviewed. Given that MAS Notice 637 governs licensed banks subject to ongoing MAS supervision, an audit that systematically misidentifies applicable annex content risks attracting regulatory scrutiny of both the bank's compliance and the quality of the external audit.

References — raw findings (per AI model)
This finding also affects
← Previous finding Finding 3. Scope and exclusions of Annex 4D in consolidated MAS Notice 637 Next finding → Finding 5. Coverage of Division 4 of Part VI in MAS Notice 637
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). "Subject matter of Annex 6C in consolidated MAS Notice 637 — Practitioners — Public Auditors." Citation ID: . RegLegBrief AI Hallucination Research, published 2026-05-28. https://reglegbrief.com/audiences/practitioners/sg/public-auditors/finding/q-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-v1-019/
APA 7th edition 
RegLeg Specialist Panel. (2026). Subject matter of Annex 6C in consolidated MAS Notice 637 [Hallucination finding ]. RegLegBrief AI Hallucination Research. https://reglegbrief.com/audiences/practitioners/sg/public-auditors/finding/q-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-v1-019/
Bluebook / OSCOLA (US + UK legal) 
RegLeg Specialist Panel, Subject matter of Annex 6C in consolidated MAS Notice 637 [], RegLegBrief AI Hallucination Research (May 28, 2026), https://reglegbrief.com/audiences/practitioners/sg/public-auditors/finding/q-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-v1-019/.
BibTeX 
@misc{reglegbrief_,
  author    = {RegLeg Specialist Panel},
  title     = {Subject matter of Annex 6C in consolidated MAS Notice 637},
  year      = {2026},
  publisher = {RegLegBrief AI Hallucination Research},
  note      = {Hallucination finding Citation ID: },
  url       = {https://reglegbrief.com/audiences/practitioners/sg/public-auditors/finding/q-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-v1-019/}
}
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