AI subject tested: Claude Sonnet 4.6 (web search on)
Question (paraphrased): What percentage of cross-border payments generate inquiries requiring manual resolution, and by how much can ISO 20022 harmonisation reduce resolution time, according to official CPMI or FSB statements?
AI response:
"No specific official statistic from CPMI or FSB officials giving a precise percentage of cross-border payments that generate inquiries...was identified in the sources reviewed."
Regulator verbatim text:
"Fabio Panetta speech r260316f (12 March 2026): '1-3 per cent of payments generate inquiries typically requiring 5-10 manual touchpoints'; resolution times reducible 'by up to 80 per cent' through harmonised ISO 20022 implementation."
Failure mode: inference_drift
Substrate document: p_11_SPEECH_Cross_border_payment_inquiry_rates_and_e_r260316f.htm
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 (2026). "What percentage of cross-border payments generate inquiries requiring manual resolution, and by how much can ISO 20022 h — Corporate Banking × Operations — International / Multilateral." Citation ID: RLB-H-INT-BIS-CPMI-ISO-20022-HARMONISATION-UPDATED-2026-Q007-Sonnet46. RegLegBrief AI Hallucination Research, published 2026-06-11. https://reglegbrief.com/regulators/j1/int/BIS-CPMI/CPMI-ISO-20022-HARMONISATION-UPDATED-2026/sectors/corporate_banking/operations/finding/INT-BIS-CPMI-INT-001-CPMI-ISO-20022-HARMONISATION-UPDATED-2026-v1-007/
RegLeg Specialist Panel. (2026). What percentage of cross-border payments generate inquiries requiring manual resolution, and by how much can ISO 20022 h [Hallucination finding RLB-H-INT-BIS-CPMI-ISO-20022-HARMONISATION-UPDATED-2026-Q007-Sonnet46]. RegLegBrief AI Hallucination Research. https://reglegbrief.com/regulators/j1/int/BIS-CPMI/CPMI-ISO-20022-HARMONISATION-UPDATED-2026/sectors/corporate_banking/operations/finding/INT-BIS-CPMI-INT-001-CPMI-ISO-20022-HARMONISATION-UPDATED-2026-v1-007/
RegLeg Specialist Panel, What percentage of cross-border payments generate inquiries requiring manual resolution, and by how much can ISO 20022 h [RLB-H-INT-BIS-CPMI-ISO-20022-HARMONISATION-UPDATED-2026-Q007-Sonnet46], RegLegBrief AI Hallucination Research (June 11, 2026), https://reglegbrief.com/regulators/j1/int/BIS-CPMI/CPMI-ISO-20022-HARMONISATION-UPDATED-2026/sectors/corporate_banking/operations/finding/INT-BIS-CPMI-INT-001-CPMI-ISO-20022-HARMONISATION-UPDATED-2026-v1-007/.
@misc{reglegbrief_RLB_H_INT_BIS_CPMI_ISO_20022_HARMONISATION_UPDATED_2026_Q007_Sonnet46,
author = {RegLeg Specialist Panel},
title = {What percentage of cross-border payments generate inquiries requiring manual resolution, and by how much can ISO 20022 h},
year = {2026},
publisher = {RegLegBrief AI Hallucination Research},
note = {Hallucination finding Citation ID: RLB-H-INT-BIS-CPMI-ISO-20022-HARMONISATION-UPDATED-2026-Q007-Sonnet46},
url = {https://reglegbrief.com/regulators/j1/int/BIS-CPMI/CPMI-ISO-20022-HARMONISATION-UPDATED-2026/sectors/corporate_banking/operations/finding/INT-BIS-CPMI-INT-001-CPMI-ISO-20022-HARMONISATION-UPDATED-2026-v1-007/}
}
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.