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

AI Hallucinations Affecting Lawyers in Singapore

Findings — impact summary

This is the consolidated view of findings. Click 'see details →' on any item for the full details for each finding.

  1. Finding 1. Separate notice designation for financial holding companies under MAS Notice 637

    A Lawyer advising a client on the capital adequacy obligations of a newly formed financial holding company who relies on the AI's fabricated notice designation will cite a non-existent instrument in their advice. If that advice is acted upon — for example, by the client's compliance team scoping its obligations — the client may apply the wrong regulatory framework, creating prudential non-compliance that MAS has power to sanction. For the Lawyer, reliance on a fabricated citation in a formal opinion creates direct malpractice exposure and, where the advice influences a regulatory filing, potential accountability under professional conduct rules.

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  2. Finding 2. Meaning of yellow highlighting in MAS Notice 637 amendment PDFs

    A Lawyer reviewing MAS Notice 637 (Amendment) 2024 to advise a client on which provisions are operative and from when may use AI assistance to decode the document's formatting conventions. If the AI's generic description of yellow highlighting is accepted, the Lawyer may miscommunicate to the client which provisions have a deferred effective date or which provisions are entirely new obligations — leading to premature or delayed compliance steps. Where those steps relate to capital adequacy reporting or capital instrument eligibility, the consequence for the client can include MAS-reportable deficiencies; for the Lawyer, the consequence is a flawed legal opinion based on a misread document.

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  3. Finding 3. Scope and exclusions of Annex 4D in consolidated MAS Notice 637

    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.

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

    A Lawyer advising a client on the valuation requirements under MAS Notice 637 who relies on the AI's description of Annex 6C as covering prudent valuation methodology will be working from an unverified inference. If the annex covers different subject matter, the Lawyer's advice on the scope and methodology of the client's valuation obligations will be incorrect. In the context of MAS prudential supervision, where capital adequacy calculations depend on the correct valuation of fair-valued instruments, the financial and regulatory consequences for the client can be significant — and the Lawyer's exposure arises from having relied on an AI answer that lacked any documentary basis.

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  5. Finding 5. Content of Division 4 of Part VI of MAS Notice 637

    A Lawyer asked to advise on what submission obligations or capital instrument conditions apply under a specific division of Part VI of MAS Notice 637 who uses the AI's characterisation as a starting point may frame their research and advice around the wrong subject matter entirely. Part VI's divisional structure in the current consolidated notice may not match the AI's inference from general capital-definition subject matter, meaning the Lawyer could scope the client's obligations incorrectly from the outset. Where the advice influences a capital instrument issuance, regulatory submission, or capital planning decision, the error carries direct financial and compliance consequences for the client and professional risk for the advising Lawyer.

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