A Lawyer scoping a client's obligations under MAS Notice 637 who relies on the AI's mischaracterisation of Annex 4D may advise the client that certain off-balance sheet exposures fall under the leverage ratio framework when they may in fact be governed by the standardised approach credit risk rules — or vice versa. The practical consequence is incorrect capital calculation methodology applied to those exposures, with potential downstream effects on reported capital ratios and MAS regulatory returns.
The AI's own self-contradictory answer compounds the risk because it creates the appearance of transparency while still leading the practitioner toward a potentially wrong primary answer.
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.
RegLeg Specialist Panel, Scope and exclusions of Annex 4D in consolidated MAS Notice 637 [], RegLegBrief AI Hallucination Research (May 28, 2026), https://reglegbrief.com/audiences/practitioners/sg/lawyers/finding/q-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-v1-017/.
RegLeg Specialist Panel (2026). "Scope and exclusions of Annex 4D in consolidated MAS Notice 637 — Practitioners — Lawyers." Citation ID: . RegLegBrief AI Hallucination Research, published 2026-05-28. https://reglegbrief.com/audiences/practitioners/sg/lawyers/finding/q-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-v1-017/
RegLeg Specialist Panel. (2026). Scope and exclusions of Annex 4D in consolidated MAS Notice 637 [Hallucination finding ]. RegLegBrief AI Hallucination Research. https://reglegbrief.com/audiences/practitioners/sg/lawyers/finding/q-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-v1-017/
@misc{reglegbrief_,
author = {RegLeg Specialist Panel},
title = {Scope and exclusions of Annex 4D in consolidated MAS Notice 637},
year = {2026},
publisher = {RegLegBrief AI Hallucination Research},
note = {Hallucination finding Citation ID: },
url = {https://reglegbrief.com/audiences/practitioners/sg/lawyers/finding/q-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-v1-017/}
}
Every finding on this page compares an AI subject's account of the rule against the regulator's verbatim text from the regulator's own portal. Both are linked. Each delta, its root causes, and impact analysis are documented and published with immutable Citation IDs.