{
  "contract": {
    "agency_name": "Department of Defence",
    "amendment_count": 4,
    "category_code": "80161500",
    "contract_end_date": "2025-12-18",
    "contract_id": "CN3909529",
    "contract_start_date": "2022-08-01",
    "currency": "AUD",
    "current_reported_value": "3773055.98",
    "description": "Strategic Business Advice",
    "events": [
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        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-bfb05436b0fb4da2a9c40a27d86e80a8-6f4d3375460334c984b5e0677fc7ca23",
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        "contract_id": "CN3909529",
        "detected_at": "2025-07-22T22:43:18Z",
        "direction": "increase",
        "duration_change_days": null,
        "event_id": "0e103b5e2cc273c4a63f095f09a8196c58057a15904cfcb7055e25d370dbb6bf",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "1908419.13",
        "notice_id": "CN3909529-A1",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/d1b9672a-442d-4419-9df3-2d85a051d940",
        "old_value": "954822.18",
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        "source_license": "https://creativecommons.org/licenses/by/3.0/au/",
        "source_publisher": "Australian Government Department of Finance",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN3909529",
        "summary": "Reported contract value increased by $953,596.95 (+99.87%)."
      },
      {
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        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-bfb05436b0fb4da2a9c40a27d86e80a8-580cca53d6c93e3587968e94d92b52f7",
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        "contract_id": "CN3909529",
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        "direction": "increase",
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        "event_id": "add4642f50db4e750440e6efed2ff211dcbda515d964c8e464109b3185a360cf",
        "field_label": "Reported Value",
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        "notice_id": "CN3909529-A2",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/90fbad80-871b-4447-a098-94a40997574c",
        "old_value": "1908419.13",
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        "source_license": "https://creativecommons.org/licenses/by/3.0/au/",
        "source_publisher": "Australian Government Department of Finance",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN3909529",
        "summary": "Reported contract value increased by $1,128,086.52 (+59.11%)."
      },
      {
        "absolute_change": null,
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-bfb05436b0fb4da2a9c40a27d86e80a8-580cca53d6c93e3587968e94d92b52f7",
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        "contract_id": "CN3909529",
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        "direction": "changed",
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        "event_id": "b560981a3bef5d6902a5dce4479686e2634a3e448e11cc0beb4883ab8f93635f",
        "field_label": "Supplier Name",
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        "new_value": "ATTURRA MCS",
        "notice_id": "CN3909529-A2",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/90fbad80-871b-4447-a098-94a40997574c",
        "old_value": "MENTUM SYSTEMS PTY LTD",
        "percentage_change": null,
        "source_license": "https://creativecommons.org/licenses/by/3.0/au/",
        "source_publisher": "Australian Government Department of Finance",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN3909529",
        "summary": "Supplier changed."
      },
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        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-bfb05436b0fb4da2a9c40a27d86e80a8-aa47051cf5fb30d8b9b2136cccb4f05f",
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        "contract_id": "CN3909529",
        "detected_at": "2025-07-22T22:43:18Z",
        "direction": "increase",
        "duration_change_days": null,
        "event_id": "f14d53ac6cf69a46330a095382f0f762831aef3c08e591d43d28cabe19f3b483",
        "field_label": "Reported Value",
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        "new_value": "3152109.97",
        "notice_id": "CN3909529-A3",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/9b10440e-1cac-43ce-8d67-9cd8abe4ff14",
        "old_value": "3036505.65",
        "percentage_change": "3.81",
        "source_license": "https://creativecommons.org/licenses/by/3.0/au/",
        "source_publisher": "Australian Government Department of Finance",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN3909529",
        "summary": "Reported contract value increased by $115,604.32 (+3.81%)."
      },
      {
        "absolute_change": "620946.01",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-bfb05436b0fb4da2a9c40a27d86e80a8-361d94f84a8135778f62a4c137c4b8b4",
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        "contract_id": "CN3909529",
        "detected_at": "2025-07-22T22:43:18Z",
        "direction": "increase",
        "duration_change_days": null,
        "event_id": "075ec4ca716630bd64be277c6688695d21ca79ad7f8d7ef00969c65a49a8ee93",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "3773055.98",
        "notice_id": "CN3909529-A4",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/6bc8f660-a20a-4de6-9e5a-ca6e3186c086",
        "old_value": "3152109.97",
        "percentage_change": "19.70",
        "source_license": "https://creativecommons.org/licenses/by/3.0/au/",
        "source_publisher": "Australian Government Department of Finance",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN3909529",
        "summary": "Reported contract value increased by $620,946.01 (+19.70%)."
      }
    ],
    "evidence_path": "evidence/CN3909529.json",
    "latest_modified_at": "2025-07-22T22:43:18Z",
    "notice_id": "CN3909529-A4",
    "official_record_url": "https://www.tenders.gov.au/Cn/Show/6bc8f660-a20a-4de6-9e5a-ca6e3186c086",
    "original_reported_value": "954822.18",
    "procurement_method": "Open tender",
    "source_url": "https://api.tenders.gov.au/ocds/findById/CN3909529",
    "supplier_name": "ATTURRA MCS",
    "title": "4600039668",
    "value_change": "2818233.80",
    "value_change_percentage": "295.16",
    "versions": [
      {
        "agency_name": "Department of Defence",
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        "notice_id": "CN3909529",
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        "source_url": "https://api.tenders.gov.au/ocds/findById/CN3909529",
        "supplier_name": "MENTUM SYSTEMS PTY LTD",
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      {
        "agency_name": "Department of Defence",
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        "source_url": "https://api.tenders.gov.au/ocds/findById/CN3909529",
        "supplier_name": "MENTUM SYSTEMS PTY LTD",
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      {
        "agency_name": "Department of Defence",
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        "source_url": "https://api.tenders.gov.au/ocds/findById/CN3909529",
        "supplier_name": "ATTURRA MCS",
        "title": "4600039668"
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      {
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        "source_url": "https://api.tenders.gov.au/ocds/findById/CN3909529",
        "supplier_name": "ATTURRA MCS",
        "title": "4600039668"
      },
      {
        "agency_name": "Department of Defence",
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        "currency": "AUD",
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        "official_record_url": "https://www.tenders.gov.au/Cn/Show/6bc8f660-a20a-4de6-9e5a-ca6e3186c086",
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        "source_url": "https://api.tenders.gov.au/ocds/findById/CN3909529",
        "supplier_name": "ATTURRA MCS",
        "title": "4600039668"
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  },
  "disclaimer": "ContractDelta identifies changes in publicly reported procurement records. A change is not evidence of misconduct. Contract amendments can result from legitimate changes in scope, timing, pricing, reporting, or data correction.",
  "generated_at": "2026-07-17T05:22:06Z",
  "schema_version": "1.0",
  "source": {
    "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
    "coverage": {
      "amended_contracts_discovered": 851,
      "amended_contracts_selected": 20,
      "amended_contracts_skipped": 831,
      "max_amended_contracts": 20,
      "mode": "bounded_amendments",
      "query_end": "2026-07-20T23:59:59.999999Z",
      "query_start": "2026-07-12T00:00:00Z",
      "selection_method": "Explicit amendment contracts were ranked by current reported value, then source modification time and contract ID. Only the highest-ranked bounded set was processed."
    },
    "license": "https://creativecommons.org/licenses/by/3.0/au/",
    "name": "AusTender OCDS API",
    "publisher": "Australian Government Department of Finance"
  }
}