---
type: "AIHallucinationFinding"
title: "Which specific appendix to 17 CFR Part 23 Subpart H was inadvertently removed by the December 2025…"
citation_id: "RLB-H-US-CFTC-SWAP-DEALER-BUSINESS-CONDUCT-DOCUMENTATION-2025-Q002-Opus47"
finding_uid: "US-CFTC-US-001-SWAP-DEALER-BUSINESS-CONDUCT-DOCUMENTATION-2025-v1-002--opus-47-websearch"
question_uid: "US-CFTC-US-001-SWAP-DEALER-BUSINESS-CONDUCT-DOCUMENTATION-2025-v1-002"
regulation_id: "US-CFTC-US-001-SWAP-DEALER-BUSINESS-CONDUCT-DOCUMENTATION-2025"
regulation_slug: "SWAP-DEALER-BUSINESS-CONDUCT-DOCUMENTATION-2025"
regulation_title: "Revisions to Business Conduct and Swap Documentation Requirements for Swap Dealers and Major Swap Participants"
regulator_short_code: "CFTC"
regulatory_body_id: "CFTC-US-001"
jurisdiction_code: "US"
j_level: "J3"
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: "misstated_rule"
substrate_document_name: "17cfr-part-23-subpart-h-ecfr-2026-06-08.pdf"
substrate_document_path: "https://reglegbrief.com/substrate/US/CFTC/SWAP-DEALER-BUSINESS-CONDUCT-DOCUMENTATION-2025/_raw_manual_substrate/17cfr-part-23-subpart-h-ecfr-2026-06-08.pdf"
substrate_section_anchor: "17 CFR Appendix A to Subpart H of Part 23"
citation_issue_types: ["Contradictory", "Fabricated"]
audiences: ["ai_labs"]
published_at: "2026-06-03T21:50:35.679742+00:00"
substrate_version: 1
methodology_version: "2.3"
license: "CC-BY-4.0"
resource: "https://reglegbrief.com/regulators/j3/us/cftc/SWAP-DEALER-BUSINESS-CONDUCT-DOCUMENTATION-2025/ai-labs/finding/US-CFTC-US-001-SWAP-DEALER-BUSINESS-CONDUCT-DOCUMENTATION-2025-v1-002--opus-47-websearch/"
tags: ["ai-hallucination", "misstated_rule", "cftc", "swap-dealer-business-conduct-documentation-2025", "us"]
timestamp: "2026-06-16T00:00:00+00:00"
---

# AI Hallucination Finding: Which specific appendix to 17 CFR Part 23 Subpart H was inadvertently removed by the December 2025…

- **Citation ID.** `RLB-H-US-CFTC-SWAP-DEALER-BUSINESS-CONDUCT-DOCUMENTATION-2025-Q002-Opus47`
- **Finding UID.** `US-CFTC-US-001-SWAP-DEALER-BUSINESS-CONDUCT-DOCUMENTATION-2025-v1-002--opus-47-websearch`
- **Regulation.** [`SWAP-DEALER-BUSINESS-CONDUCT-DOCUMENTATION-2025`](/okf/regulations/SWAP-DEALER-BUSINESS-CONDUCT-DOCUMENTATION-2025.md) — Revisions to Business Conduct and Swap Documentation Requirements for Swap Dealers and Major Swap Participants
- **Regulator.** [`CFTC-US-001`](/okf/bodies/CFTC-US-001.md) — Commodity Futures Trading Commission
- **AI subject.** Claude Opus 4.7 (web search on)
- **Failure mode.** [`misstated_rule`](/okf/taxonomy/failure-modes.md)
- **Published.** 2026-06-03T21:50:35.679742+00:00

## Question put to the AI subject

Which specific appendix to 17 CFR Part 23 Subpart H was inadvertently removed by the December 2025 final rule and restored by the January 28, 2026 correction, and what guidance does it contain?

## AI subject's verbatim answer

On January 28, 2026, the Commission published a correction to the final rule (Doc. 2026-01712, also effective Jan. 29, 2026) that reinstated an appendix that would otherwise have been inadvertently removed by the December 30 amendatory instructions.

## Verbatim regulator text contradicting the answer

> Appendix A to Subpart H of Part 23 — Guidance on the Application of §§ 23.434 and 23.440 for Swap Dealers That Make Recommendations to Counterparties or Special Entities. The following provides guidance on the application of §§ 23.434 and 23.440 to swap dealers that make recommendations to counterparties or Special Entities.

_Source:_ [17cfr-part-23-subpart-h-ecfr-2026-06-08.pdf](https://reglegbrief.com/substrate/US/CFTC/SWAP-DEALER-BUSINESS-CONDUCT-DOCUMENTATION-2025/_raw_manual_substrate/17cfr-part-23-subpart-h-ecfr-2026-06-08.pdf)
_Section anchor:_ 17 CFR Appendix A to Subpart H of Part 23

## Failure mode

**`misstated_rule`** — Misstated rule — the AI gave a definite rule, threshold, or obligation that the regulator's verbatim text does not support.

## Citation-issue types

- **Contradictory** — <https://www.federalregister.gov/documents/2025/12/30/2025-23953/revisions-to-business-conduct-and-swap-documentation-requirements-for-swap-dealers-and-major-swap>
- **Contradictory** — <https://www.federalregister.gov/documents/2026/01/28/2026-01712/revisions-to-business-conduct-and-swap-documentation-requirements-for-swap-dealers-and-major-swap>
- **Contradictory** — <https://www.cftc.gov/csl/25-49/download>
- **Contradictory** — <https://www.cftc.gov/PressRoom/PressReleases/9157-25>
- **Fabricated** — <https://changeflow.com/govping/government-legislation/fr-2026-02-26-24>

## Related concepts

- Regulation: [SWAP-DEALER-BUSINESS-CONDUCT-DOCUMENTATION-2025](/okf/regulations/SWAP-DEALER-BUSINESS-CONDUCT-DOCUMENTATION-2025.md)
- Regulator: [CFTC-US-001](/okf/bodies/CFTC-US-001.md)
- Failure-mode taxonomy: [misstated_rule](/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-US-CFTC-SWAP-DEALER-BUSINESS-CONDUCT-DOCUMENTATION-2025-Q002-Opus47`

Resource URL (HTML view of this finding):

<https://reglegbrief.com/regulators/j3/us/cftc/SWAP-DEALER-BUSINESS-CONDUCT-DOCUMENTATION-2025/ai-labs/finding/US-CFTC-US-001-SWAP-DEALER-BUSINESS-CONDUCT-DOCUMENTATION-2025-v1-002--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.