---
type: "AIHallucinationFinding"
title: "Which central bank is explicitly named as a collaborating partner with CPMI on the payment…"
citation_id: "RLB-H-INT-BIS-CPMI-API-HARMONISATION-CROSS-BORDER-2024-Q007-Sonnet46"
finding_uid: "INT-BIS-CPMI-INT-001-CPMI-API-HARMONISATION-CROSS-BORDER-2024-v1-007--sonnet-46-websearch"
question_uid: "INT-BIS-CPMI-INT-001-CPMI-API-HARMONISATION-CROSS-BORDER-2024-v1-007"
regulation_id: "INT-BIS-CPMI-INT-001-CPMI-API-HARMONISATION-CROSS-BORDER-2024"
regulation_slug: "CPMI-API-HARMONISATION-CROSS-BORDER-2024"
regulation_title: "Promoting the Harmonisation of Application Programming Interfaces to Enhance Cross-Border Payments: Recommendations and Toolkit"
regulator_short_code: "BIS-CPMI"
regulatory_body_id: "BIS-CPMI-INT-001"
jurisdiction_code: "INT"
j_level: "J1"
ai_subject: "claude-sonnet-4-6"
ai_subject_display: "Claude Sonnet 4.6 (web search on)"
ai_subject_version: "sonnet-46-websearch"
response_failure_mode: "inference_drift"
substrate_document_name: "p_05_GUIDELINE_d218___d230_update__what_changed_from_or_d223.htm"
substrate_document_path: "https://reglegbrief.com/substrate/INT/BIS-CPMI/CPMI-API-HARMONISATION-CROSS-BORDER-2024/_raw_manual_substrate/p_05_GUIDELINE_d218___d230_update__what_changed_from_or_d223.htm"
substrate_section_anchor: "d224 / CPMI Brief No. 9 — SARB as CPMI's named implementation partner for pre-validation API recommendation"
citation_issue_types: ["Contradictory", "Pretextual"]
audiences: ["ai_labs"]
published_at: "2026-06-07T07:58:31.580238+00:00"
substrate_version: 1
methodology_version: "2.3"
license: "CC-BY-4.0"
resource: "https://reglegbrief.com/regulators/j1/int/bis-cpmi/CPMI-API-HARMONISATION-CROSS-BORDER-2024/ai-labs/finding/INT-BIS-CPMI-INT-001-CPMI-API-HARMONISATION-CROSS-BORDER-2024-v1-007--sonnet-46-websearch/"
tags: ["ai-hallucination", "inference_drift", "bis-cpmi", "cpmi-api-harmonisation-cross-border-2024", "int"]
timestamp: "2026-06-16T00:00:00+00:00"
---

# AI Hallucination Finding: Which central bank is explicitly named as a collaborating partner with CPMI on the payment…

- **Citation ID.** `RLB-H-INT-BIS-CPMI-API-HARMONISATION-CROSS-BORDER-2024-Q007-Sonnet46`
- **Finding UID.** `INT-BIS-CPMI-INT-001-CPMI-API-HARMONISATION-CROSS-BORDER-2024-v1-007--sonnet-46-websearch`
- **Regulation.** [`CPMI-API-HARMONISATION-CROSS-BORDER-2024`](/okf/regulations/CPMI-API-HARMONISATION-CROSS-BORDER-2024.md) — Promoting the Harmonisation of Application Programming Interfaces to Enhance Cross-Border Payments: Recommendations and Toolkit
- **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 Sonnet 4.6 (web search on)
- **Failure mode.** [`inference_drift`](/okf/taxonomy/failure-modes.md)
- **Published.** 2026-06-07T07:58:31.580238+00:00

## Question put to the AI subject

Which central bank is explicitly named as a collaborating partner with CPMI on the payment pre-validation API recommendation from the October 2024 API harmonisation report, and what does that collaboration involve?

## AI subject's verbatim answer

available sources do not identify SARB as a named pilot partner for any specific d224 recommendation, including the pre-validation API recommendation

## Verbatim regulator text contradicting the answer

> CPMI Brief No. 9 (Nov 2025): 'The CPMI, in collaboration with the South African Reserve Bank (SARB), has been advancing the API recommendation on payment pre-validation by conducting interviews with m

_Source:_ [p_05_GUIDELINE_d218___d230_update__what_changed_from_or_d223.htm](https://reglegbrief.com/substrate/INT/BIS-CPMI/CPMI-API-HARMONISATION-CROSS-BORDER-2024/_raw_manual_substrate/p_05_GUIDELINE_d218___d230_update__what_changed_from_or_d223.htm)
_Section anchor:_ d224 / CPMI Brief No. 9 — SARB as CPMI's named implementation partner for pre-validation API recommendation

## 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/d224.htm>
- **Pretextual** — <https://www.bankofengland.co.uk/news/2024/december/the-boe-welcomes-api-panel-of-expert-recommendations-to-enhance-cross-border-payments>
- **Contradictory** — <https://www.bis.org/cpmi/publ/brief9.htm>
- **Contradictory** — <https://www.bis.org/cpmi/cross_border/programme.htm>

## Related concepts

- Regulation: [CPMI-API-HARMONISATION-CROSS-BORDER-2024](/okf/regulations/CPMI-API-HARMONISATION-CROSS-BORDER-2024.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-API-HARMONISATION-CROSS-BORDER-2024-Q007-Sonnet46`

Resource URL (HTML view of this finding):

<https://reglegbrief.com/regulators/j1/int/bis-cpmi/CPMI-API-HARMONISATION-CROSS-BORDER-2024/ai-labs/finding/INT-BIS-CPMI-INT-001-CPMI-API-HARMONISATION-CROSS-BORDER-2024-v1-007--sonnet-46-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.