{
  "case_id": "CR-008",
  "slug": "ccn-below-threshold-negative-control",
  "title": "Contract change notice correctly below threshold (negative control)",
  "document": "document.pdf",
  "pages": 1,
  "sha256": "9cd26ea32fd907bd64a859d84c82c97a18f14c4077d9812b5dad6c44c0518784",
  "hazards": [
    "negative_control",
    "money_spaced_format",
    "date_uk_format",
    "percent_not_printed"
  ],
  "notes": "A +6.0% uplift with no term change, correctly made under section 74(1)(c). Money is printed as £4 200 000. No high-severity flag should be raised; this catches over-eager rule engines.",
  "fields": {
    "notice_type": "contract_change_notice",
    "notice_reference": "007311-2026",
    "contracting_authority": "Wexcombe Borough Council",
    "contracting_authority_type": "sub_central",
    "supplier_name": "Brightwater Environmental Services Limited",
    "supplier_registration_number": "07720941",
    "contract_title": "Environmental Services Partnership (Street Cleansing)",
    "contract_reference": "WBC/2025/0119",
    "procurement_type": "services",
    "light_touch": false,
    "procedure": "open",
    "cpv_codes": [
      "90610000",
      "90611000"
    ],
    "notice_published_date": "2026-06-02",
    "award_date": "2025-09-30",
    "contract_signed_date": "2025-10-28",
    "contract_start_date": "2025-12-01",
    "contract_end_date": null,
    "extension_options_months": 24,
    "maximum_term_months": 84,
    "contract_value_gbp": null,
    "value_includes_vat": false,
    "number_of_tenders_received": null,
    "kpis": null,
    "payment_terms_days": null,
    "standstill_end_date": null,
    "lots": [],
    "modification_number": 2,
    "modification_date": "2026-06-15",
    "modification_description": "Uplift to the schedule of rates to reflect the 2026/27 National Living Wage increase, applied to the cleansing operatives' labour element only.",
    "modification_ground": "s74_below_threshold",
    "original_contract_value_gbp": 4200000,
    "revised_contract_value_gbp": 4452000,
    "value_change_gbp": 252000,
    "value_change_percent": 6.0,
    "original_end_date": "2030-11-30",
    "revised_end_date": "2030-11-30",
    "term_change_months": 0,
    "contract_change_notice_published": true,
    "voluntary_standstill": false
  },
  "expected_flags": [
    {
      "id": "PA23-threshold-in-scope",
      "severity": "info",
      "detail": "Value £4,200,000 is at or above the services threshold £207,720 (inc VAT) applicable on 2026-06-02."
    }
  ],
  "provenance": {
    "source": "synthetic",
    "generator": "crtest.gen 0.1.0",
    "licence": "CC0-1.0",
    "statement": "Fictional authority, supplier and figures. Generated for extraction testing; not a real notice."
  }
}