Annex F critical service provider oversight, supervisory scope inverted
On Annex F, Claude Sonnet 4.6 with web search inverted the regulator's stated scope, asserting that authorities do not directly supervise or oversee critical service providers and that Annex F's expectations "flow from the FMI to its CSPs." Annex F's opening text expressly contemplates the opposite: a regulator, supervisor, or overseer of an FMI may want to establish expectations directed at CSPs, and the outlined expectations are "specifically targeted at critical service providers." The inversion is structural rather than textual, the model converted a regulator-to-CSP oversight channel into an FMI-internalised contractual obligation, and is the kind of failure that would not surface in standard text-completion evaluations because the surface form of the answer is internally coherent.
A probe specifically on Annex F's scope-direction language, tested against the model's default framing of FMI-CSP supervisory relationships, would expose whether the inversion is model-specific or a corpus-level pattern.
On Annex F, Claude Sonnet 4.6 with web search inverted the regulator's stated scope, asserting that authorities do not directly supervise or oversee critical service providers and that Annex F's expectations "flow from the FMI to its CSPs." Annex F's opening text expressly contemplates the opposite: a regulator, supervisor, or overseer of an FMI may want to establish expectations directed at CSPs, and the outlined expectations are "specifically targeted at critical service providers." The inversion is structural rather than textual — the model converted a regulator-to-CSP oversight channel into an FMI-internalised contractual obligation — and is the kind of failure that would not surface in standard text-completion evaluations because the surface form of the answer is internally coherent.
A probe specifically on Annex F's scope-direction language, tested against the model's default framing of FMI-CSP supervisory relationships, would expose whether the inversion is model-specific or a corpus-level pattern.
This finding documents a confirmed hallucination by Claude Sonnet 4.6 (web search on) on a probe of the regulation. The model's response was tested against the regulator's verbatim primary text and classified as inference_drift. Full per-finding context is available via the linked Citation ID.
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, What oversight expectations does the PFMI's Annex F establish for critical service providers, and can regulators direct [RLB-H-INT-BIS-CPMI-IOSCO-PFMI-2012-Q011-Sonnet46], RegLegBrief AI Hallucination Research (June 11, 2026), https://reglegbrief.com/regulators/j1/int/BIS-CPMI/CPMI-IOSCO-PFMI-2012/practitioners/lawyers/finding/INT-BIS-CPMI-INT-001-CPMI-IOSCO-PFMI-2012-v1-011/.
RegLeg Specialist Panel (2026). "What oversight expectations does the PFMI's Annex F establish for critical service providers, and can regulators direct — Practitioners — Lawyers." Citation ID: RLB-H-INT-BIS-CPMI-IOSCO-PFMI-2012-Q011-Sonnet46. RegLegBrief AI Hallucination Research, published 2026-06-11. https://reglegbrief.com/regulators/j1/int/BIS-CPMI/CPMI-IOSCO-PFMI-2012/practitioners/lawyers/finding/INT-BIS-CPMI-INT-001-CPMI-IOSCO-PFMI-2012-v1-011/
RegLeg Specialist Panel. (2026). What oversight expectations does the PFMI's Annex F establish for critical service providers, and can regulators direct [Hallucination finding RLB-H-INT-BIS-CPMI-IOSCO-PFMI-2012-Q011-Sonnet46]. RegLegBrief AI Hallucination Research. https://reglegbrief.com/regulators/j1/int/BIS-CPMI/CPMI-IOSCO-PFMI-2012/practitioners/lawyers/finding/INT-BIS-CPMI-INT-001-CPMI-IOSCO-PFMI-2012-v1-011/
@misc{reglegbrief_RLB_H_INT_BIS_CPMI_IOSCO_PFMI_2012_Q011_Sonnet46,
author = {RegLeg Specialist Panel},
title = {What oversight expectations does the PFMI's Annex F establish for critical service providers, and can regulators direct },
year = {2026},
publisher = {RegLegBrief AI Hallucination Research},
note = {Hallucination finding Citation ID: RLB-H-INT-BIS-CPMI-IOSCO-PFMI-2012-Q011-Sonnet46},
url = {https://reglegbrief.com/regulators/j1/int/BIS-CPMI/CPMI-IOSCO-PFMI-2012/practitioners/lawyers/finding/INT-BIS-CPMI-INT-001-CPMI-IOSCO-PFMI-2012-v1-011/}
}
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.