---
type: "AIHallucinationFinding"
title: "What share of faster payment systems and RTGS systems are currently using ISO 20022 messaging,…"
citation_id: "RLB-H-INT-BIS-CPMI-ISO-20022-HARMONISATION-UPDATED-2026-Q006-Opus47"
finding_uid: "INT-BIS-CPMI-INT-001-CPMI-ISO-20022-HARMONISATION-UPDATED-2026-v1-006--opus-47-websearch"
question_uid: "INT-BIS-CPMI-INT-001-CPMI-ISO-20022-HARMONISATION-UPDATED-2026-v1-006"
regulation_id: "INT-BIS-CPMI-INT-001-CPMI-ISO-20022-HARMONISATION-UPDATED-2026"
regulation_slug: "CPMI-ISO-20022-HARMONISATION-UPDATED-2026"
regulation_title: "Harmonised ISO 20022 Data Requirements for Enhancing Cross-Border Payments - Updated Report"
regulator_short_code: "BIS-CPMI"
regulatory_body_id: "BIS-CPMI-INT-001"
jurisdiction_code: "INT"
j_level: "J1"
ai_subject: "claude-opus-4-7"
ai_subject_display: "Claude Opus 4.7 (web search on)"
ai_subject_version: "opus-47-websearch"
response_failure_mode: "inference_drift"
substrate_document_name: "p_10_SPEECH_ISO_20022_adoption_rates_across_payment_r260316d.htm"
substrate_document_path: "https://reglegbrief.com/substrate/INT/BIS-CPMI/CPMI-ISO-20022-HARMONISATION-UPDATED-2026/_raw_manual_substrate/p_10_SPEECH_ISO_20022_adoption_rates_across_payment_r260316d.htm"
substrate_section_anchor: "ISO 20022 adoption rates across payment systems (as of December 2024 monitoring survey)"
citation_issue_types: ["Contradictory"]
audiences: ["ai_labs"]
published_at: "2026-06-07T07:58:42.249825+00:00"
substrate_version: 1
methodology_version: "2.3"
license: "CC-BY-4.0"
resource: "https://reglegbrief.com/regulators/j1/int/bis-cpmi/CPMI-ISO-20022-HARMONISATION-UPDATED-2026/ai-labs/finding/INT-BIS-CPMI-INT-001-CPMI-ISO-20022-HARMONISATION-UPDATED-2026-v1-006--opus-47-websearch/"
tags: ["ai-hallucination", "inference_drift", "bis-cpmi", "cpmi-iso-20022-harmonisation-updated-2026", "int"]
timestamp: "2026-06-16T00:00:00+00:00"
---

# AI Hallucination Finding: What share of faster payment systems and RTGS systems are currently using ISO 20022 messaging,…

- **Citation ID.** `RLB-H-INT-BIS-CPMI-ISO-20022-HARMONISATION-UPDATED-2026-Q006-Opus47`
- **Finding UID.** `INT-BIS-CPMI-INT-001-CPMI-ISO-20022-HARMONISATION-UPDATED-2026-v1-006--opus-47-websearch`
- **Regulation.** [`CPMI-ISO-20022-HARMONISATION-UPDATED-2026`](/okf/regulations/CPMI-ISO-20022-HARMONISATION-UPDATED-2026.md) — Harmonised ISO 20022 Data Requirements for Enhancing Cross-Border Payments - Updated Report
- **Regulator.** [`BIS-CPMI-INT-001`](/okf/bodies/BIS-CPMI-INT-001.md) — Bank for International Settlements — Committee on Payments and Market Infrastructures (CPMI)
- **AI subject.** Claude Opus 4.7 (web search on)
- **Failure mode.** [`inference_drift`](/okf/taxonomy/failure-modes.md)
- **Published.** 2026-06-07T07:58:42.249825+00:00

## Question put to the AI subject

What share of faster payment systems and RTGS systems are currently using ISO 20022 messaging, according to CPMI monitoring survey data cited by FSB officials?

## AI subject's verbatim answer

79% of both real-time gross settlement (RTGS) systems and fast payment systems (FPS) have either already implemented ISO 20022 or have concrete plans to do so.

## Verbatim regulator text contradicting the answer

> More than three quarters of faster payment systems covered by the survey, and approaching half of RTGS systems, are now using ISO 20022.

_Source:_ [p_10_SPEECH_ISO_20022_adoption_rates_across_payment_r260316d.htm](https://reglegbrief.com/substrate/INT/BIS-CPMI/CPMI-ISO-20022-HARMONISATION-UPDATED-2026/_raw_manual_substrate/p_10_SPEECH_ISO_20022_adoption_rates_across_payment_r260316d.htm)
_Section anchor:_ ISO 20022 adoption rates across payment systems (as of December 2024 monitoring survey)

## Failure mode

**`inference_drift`** — Inference drift — the AI inferred a conclusion the regulator's text does not warrant, often by combining unrelated provisions.

## Citation-issue types

- **Contradictory** — <https://www.bis.org/cpmi/publ/brief10.pdf>
- **Contradictory** — <https://www.bis.org/cpmi/publ/brief11.pdf>

## Related concepts

- Regulation: [CPMI-ISO-20022-HARMONISATION-UPDATED-2026](/okf/regulations/CPMI-ISO-20022-HARMONISATION-UPDATED-2026.md)
- Regulator: [BIS-CPMI-INT-001](/okf/bodies/BIS-CPMI-INT-001.md)
- Failure-mode taxonomy: [inference_drift](/okf/taxonomy/failure-modes.md)
- Methodology: [v2.3](/okf/methodology.md)
- Editorial standards: [right of reply](/okf/editorial-standards.md)

## Reproduction

Citation ID: `RLB-H-INT-BIS-CPMI-ISO-20022-HARMONISATION-UPDATED-2026-Q006-Opus47`

Resource URL (HTML view of this finding):

<https://reglegbrief.com/regulators/j1/int/bis-cpmi/CPMI-ISO-20022-HARMONISATION-UPDATED-2026/ai-labs/finding/INT-BIS-CPMI-INT-001-CPMI-ISO-20022-HARMONISATION-UPDATED-2026-v1-006--opus-47-websearch/>

This finding is reproducible against the substrate document linked above, using the same AI subject, the same methodology version, and the verbatim question text.