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Practitioners — Public Auditors · updated 2026-06-03
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Finding#1 — KC3 Basel carve-out condition fabricated with KC4 liquidity test

RLB Citation ID: RLB-F-INT-BIS-CPMI-IOSCO-PFMI-L3-GENERAL-BUSINESS-RISK-2025-Q002
AI's failure:Exposed Fabrication Risk for Public Auditors:Wrong deliverable
What the RLB Specialist Panel found
For Claude Opus 4.7 (web search on)
Question (paraphrased to protect IP)

Under PFMI Principle 15 Key Consideration 3, what is the specific condition that governs whether equity held under international risk-based capital standards (e.g. Basel/CRD) can be counted towards an FMI's liquid net assets funded by equity requirement?

RLB's analysis

The model generated a two-part compound condition — a KC4 liquidity requirement and a non-duplication-across-Principles constraint — that does not appear in the regulator's text. The published rule states a single permissive condition framed around avoiding duplicate capital requirements. The model's formulation is internally coherent and draws on real concepts from adjacent provisions of the PFMI framework, but it applies them to this Key Consideration in a way the standard does not support, producing a materially more restrictive and structurally different rule than the regulator published.

AI Head's analysis — what weakness in the AI model caused this

This failure implicates training-data representation of PFMI Principle 15's Key Consideration structure: the model generated a two-part compound condition drawing on real concepts from adjacent Key Considerations (KC4 liquidity, cross-Principles non-duplication) and applied them to KC3 in a way the standard does not support. The subsystem gap is verbatim-constraint anchoring — the model's schema for how this provision works overrode the regulator's actual published language, producing a materially more restrictive rule that does not exist.

For Claude Sonnet 4.6 (web search on)
Question (paraphrased to protect IP)

A capital management team at a major CCP is preparing an annual LNAFE sufficiency review. Provide an internal policy note specifying what capital instruments qualify toward LNAFE under PFMI Principle 15 Key Consideration 3, what must be held separately, and whether equity already held in compliance with international risk-based capital standards such as Basel or CRD frameworks can be counted toward LNAFE or must be held on top.

RLB's analysis

The model issued a categorical denial of a provision that exists in the published text of the Key Consideration. Its framing — asserting that KC3 "is the segregation requirement, not the equity-type or asset-quality provision" — suggests the model reconstructed the Key Consideration's function from structural inference about PFMI Principle 15 rather than from the regulator's actual text, and applied that inference to override the specific carve-out language. The output is not a paraphrase error; it is a direct factual contradiction of the rule, expressed with high apparent confidence in a format appropriate for a compliance policy note.

AI Head's analysis — what weakness in the AI model caused this

This is a high-consequence failure for compliance-context deployment: the model issued a categorical denial of a provision that exists verbatim in the published standard, framed as an authoritative policy note for a CCP capital management team. The subsystem gap is training-data representation of the KC3 carve-out combined with post-training calibration on categorical denial — a high-confidence 'does NOT include' assertion on a regulator-specific provision should trigger a higher uncertainty signal than the model produced here.

Impact for Public Auditors in international jurisdictions advising on the Implementation Monitoring of the PFMI: Level 3 Assessment on General Business Risks

An auditor relying on this AI response would advise that Basel/CRD equity can only count toward the KC3 LNAFE buffer if the underlying assets also satisfy a KC4 liquidity test — a condition that appears nowhere in KC3. A CCP applying this fabricated eligibility screen would potentially exclude compliant equity capital from its LNAFE calculation, understating its buffer and generating a false compliance gap. The client loses a correct eligibility analysis; the auditor's sign-off references a standard that does not exist, exposing the opinion to immediate challenge against the PFMI source text.

References — raw findings (per AI model)
This finding also affects
Next finding → Finding#2 — Six-month LNAFE floor inflated into invented dual-track minimum
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.

RLB Citation ID: RLB-F-INT-BIS-CPMI-IOSCO-PFMI-L3-GENERAL-BUSINESS-RISK-2025-Q002
Plain text Download
RegLeg Specialist Panel (2026). "Finding#1 — KC3 Basel carve-out condition fabricated with KC4 liquidity test — Practitioners — Public Auditors." Citation ID: RLB-F-INT-BIS-CPMI-IOSCO-PFMI-L3-GENERAL-BUSINESS-RISK-2025-Q002. RegLegBrief AI Hallucination Research, published 2026-06-03. https://reglegbrief.com/regulators/j1/int/bis-cpmi/cpmi-iosco-pfmi-l3-general-business-risk-2025/practitioners/public-auditors/finding/INT-BIS-CPMI-INT-001-CPMI-IOSCO-PFMI-L3-GENERAL-BUSINESS-RISK-2025-v1-002/
APA 7th edition Download
RegLeg Specialist Panel. (2026). Finding#1 — KC3 Basel carve-out condition fabricated with KC4 liquidity test [Hallucination finding RLB-F-INT-BIS-CPMI-IOSCO-PFMI-L3-GENERAL-BUSINESS-RISK-2025-Q002]. RegLegBrief AI Hallucination Research. https://reglegbrief.com/regulators/j1/int/bis-cpmi/cpmi-iosco-pfmi-l3-general-business-risk-2025/practitioners/public-auditors/finding/INT-BIS-CPMI-INT-001-CPMI-IOSCO-PFMI-L3-GENERAL-BUSINESS-RISK-2025-v1-002/
Bluebook / OSCOLA (US + UK legal) Download
RegLeg Specialist Panel, Finding#1 — KC3 Basel carve-out condition fabricated with KC4 liquidity test [RLB-F-INT-BIS-CPMI-IOSCO-PFMI-L3-GENERAL-BUSINESS-RISK-2025-Q002], RegLegBrief AI Hallucination Research (June 03, 2026), https://reglegbrief.com/regulators/j1/int/bis-cpmi/cpmi-iosco-pfmi-l3-general-business-risk-2025/practitioners/public-auditors/finding/INT-BIS-CPMI-INT-001-CPMI-IOSCO-PFMI-L3-GENERAL-BUSINESS-RISK-2025-v1-002/.
BibTeX Download
@misc{reglegbrief_RLB_F_INT_BIS_CPMI_IOSCO_PFMI_L3_GENERAL_BUSINESS_RISK_2025_Q002,
  author    = {RegLeg Specialist Panel},
  title     = {Finding#1 — KC3 Basel carve-out condition fabricated with KC4 liquidity test},
  year      = {2026},
  publisher = {RegLegBrief AI Hallucination Research},
  note      = {Hallucination finding Citation ID: RLB-F-INT-BIS-CPMI-IOSCO-PFMI-L3-GENERAL-BUSINESS-RISK-2025-Q002},
  url       = {https://reglegbrief.com/regulators/j1/int/bis-cpmi/cpmi-iosco-pfmi-l3-general-business-risk-2025/practitioners/public-auditors/finding/INT-BIS-CPMI-INT-001-CPMI-IOSCO-PFMI-L3-GENERAL-BUSINESS-RISK-2025-v1-002/}
}
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