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Corporate Banking × Risk — Singapore · published 2026-05-28 · methodology v2.1

AI Hallucinations Affecting Risk at Corporate Banking Firms 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. Scope and exclusions of Annex 4D under MAS Notice 637

    A Risk team that relies on the AI's framing of Annex 4D risks misclassifying off-balance sheet items in the wrong framework — either incorrectly applying leverage ratio treatment to items governed by the standardised approach credit risk rules, or vice versa. If this mischaracterisation enters an internal capital model methodology document or a credit approval policy, it may propagate through every transaction assessed against that framework until corrected. MAS has the authority to require capital remediation and a formal methodology review where it finds that a bank's internal processes have not correctly applied the operative Notice, and the cost of a firm-wide correction — across models, policies, and training materials — will significantly exceed the cost of the original verification step.

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  2. Finding 2. Content of Annex 6C under MAS Notice 637

    If the AI's description of Annex 6C as a prudent valuation and AVA framework is incorrect, any Risk team that builds its prudent valuation policy or fair-value governance documentation on that description will be applying the wrong requirements to its fair-valued financial instruments. In a Corporate Banking context, where fair-valued positions can include derivatives, structured products, and traded credit instruments, the regulatory and financial consequences of an incorrect valuation framework can be significant — including capital miscalculation, incorrect regulatory reporting, and potential MAS enforcement action where the deficiency persists across reporting periods. The absence of any supporting document passage in the AI's response is itself a signal that the team should treat the answer as unverified until the actual Annex 6C text has been read and confirmed.

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