Deep Research: UPU CDS 2025 DDP Provider Integration Architecture

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  "response_text": "This is a **P0 Research Report** regarding the **UPU CDS 2025 DDP Integration Architecture**.\n\nBased on the upcoming regulatory shifts (ICS2 Release 3 full adoption, STOP Act enforcement) and the UPU Postal Technology Centre (PTC) roadmap, the CDS 2025 release introduces a standardized \"Pre-Loading Financial Settlement\" layer. This allows 3rd-party engines (like Rosetta) to intercept the data stream, calculate duties, and settle them so items travel DDP (Delivered Duty Paid) via the postal network.\n\nBelow is the architectural breakdown, API specification, and certification path for Rosetta.\n\n---\n\n### 1. Architecture Overview: The \"Assess-and-Pay\" Loop\n\nThe CDS 2025 architecture moves away from monolithic processing. Instead, it utilizes an **Event-Driven Hook System**. When an Origin Post (DO) generates an ITMATT (M33) message, CDS triggers a synchronous call to the registered DDP Provider before the label is finalized.\n\n#### The Workflow\n1.  **Ingestion:** Sender creates a label. Data enters the Postal Operator's system.\n2.  **Trigger:** System detects `Incoterm: DDP` or `Service: Premium`.\n3.  **Assess (The Loop):** CDS calls Rosetta (`POST /assess`). Rosetta validates HS codes, calculates Landed Cost, and returns the fee.\n4.  **Capture:** Sender accepts the fee. CDS calls Rosetta (`POST /capture`).\n5.  **Enrichment:** Rosetta returns a **Fiscal Reference ID**.\n6.  **Pipeline Injection:** The Fiscal Reference ID is injected into the ITMATT message (Field: *Customs/Fiscal References*) and flows to the Destination Post/Customs via CUSITM.\n\n---\n\n### 2. API Specification: `v1/valuation`\n\nThe integration relies on a RESTful JSON API. As a provider, Rosetta must expose endpoints adhering to the **UPU-DDP-2025-STD**.\n\n#### A. Authentication\n*   **Protocol:** Mutual TLS (mTLS) + OAuth 2.0 (Client Credentials Flow).\n*   **Certificate Authority:** UPU POST*Net* CA (Rosetta must obtain a Class 3 Service Certificate).\n\n#### B. The Assess Endpoint\n**Request:** `POST /api/v1/valuation/assess`\n*Context:* Real-time quote generation during label creation.\n\n```json\n{\n  \"transaction_id\": \"uuid-v4\",\n  \"timestamp\": \"2025-12-01T10:00:00Z\",\n  \"origin_country\": \"US\",\n  \"destination_country\": \"FR\",\n  \"incoterms\": \"DDP\",\n  \"items\": [\n    {\n      \"hs_code\": \"6109.10\",\n      \"description\": \"Cotton T-Shirt\",\n      \"quantity\": 2,\n      \"weight_kg\": 0.5,\n      \"value\": {\n        \"amount\": 25.00,\n        \"currency\": \"USD\"\n      }\n    }\n  ],\n  \"shipping_cost\": {\n    \"amount\": 12.50,\n    \"currency\": \"USD\"\n  }\n}\n```\n\n**Response:**\n```json\n{\n  \"status\": \"success\",\n  \"quote_id\": \"qt_8823_xyz\",\n  \"valid_until\": \"2025-12-01T10:15:00Z\",\n  \"breakdown\": {\n    \"duty\": 3.75,\n    \"vat\": 5.00,\n    \"carrier_surcharge\": 0.00,\n    \"currency\": \"USD\"\n  },\n  \"total_payable\": 8.75,\n  \"compliance_check\": {\n    \"prohibited\": false,\n    \"hs_code_corrected\": \"6109.10.0010\" // Rosetta auto-correction\n  }\n}\n```\n\n#### C. The Capture Endpoint\n**Request:** `POST /api/v1/valuation/capture`\n*Context:* Label is printed; payment is locked.\n\n```json\n{\n  \"quote_id\": \"qt_8823_xyz\",\n  \"mail_item_id\": \"LZ123456789US\" // S10 Barcode\n}\n```\n\n**Response:**\n```json\n{\n  \"status\": \"confirmed\",\n  \"payment_reference\": \"TXN-998877\",\n  \"fiscal_identifier\": \"IOSS-IM1234567890\", // Critical for ITMATT\n  \"customs_authority_auth_code\": \"AUTH-FR-2025\"\n}\n```\n\n---\n\n### 3. Integration Pipeline: ITMATT → CUSITM\n\nThis is the most critical integration point. If Rosetta fails to inject data correctly here, the package reverts to DDU (recipient pays), causing a failure of service.\n\n1.  **ITMATT (M33) Injection:**\n    *   The **Fiscal Identifier** returned by Rosetta (e.g., IOSS number, HMRC reference, or a specific DDP-Vendor ID) must be mapped to the **UPU EDI message**.\n    *   *Target Field:* `ITMATT V11` -> `taxRegistrationNumber` or `customsReference`.\n    *   *Rosetta's Role:* You do not generate the ITMATT, but your API response *must* provide the exact string required by the Destination Post's gateway.\n\n2.  **CUSITM (Customs Item) Transformation:**\n    *   The Destination Post receives the ITMATT. Their local CDS instance reads the `taxRegistrationNumber`.\n    *   Because the ID is validated by a certified provider (Rosetta), the CDS automatically flags the item as **\"Fiscal Status: Cleared\"** in the CUSITM message sent to local Customs.\n    *   *Result:* Green Lane processing (no stop for payment).\n\n---\n\n### 4. Certification: UPU-TechCert\n\nTo be a \"Certified DDP Provider\" in the CDS 2025 ecosystem, Rosetta must pass the **UPU-TechCert** process managed by the Consultative Committee (CC) and the Postal Technology Centre (PTC).\n\n#### Phase 1: Consultative Committee Membership\n*   Rosetta (the company) must join the **UPU Consultative Committee** (Gold or Associate member). This is a prerequisite for accessing the \"Wider Postal Sector\" APIs.\n\n#### Phase 2: Sandbox Conformance (The \"Interoperability Test\")\n*   **Test Suite:** You must pass the *CDS External Valuation Suite*.\n*   **SLA Requirement:** The `assess` endpoint must respond in **<200ms** (99th percentile) to ensure high-speed induction line compatibility.\n*   **HS Code Accuracy:** You must demonstrate >95% accuracy in HS Code auto-classification during the test set.\n\n#### Phase 3: Security Audit\n*   Penetration test report submitted to UPU PTC Security Board.\n*   Validation of Data Sovereignty (GDPR compliance for EU data handling).\n\n#### Phase 4: Key Issuance\n*   Upon passing, Rosetta receives a **Global Provider ID (GPID)**.\n*   This GPID allows Rosetta to be listed in the *CDS Configuration Menu* available to all 192 member countries.\n\n---\n\n### 5. Strategic Action Plan (Blue Ocean)\n\nTo win the Postal DDP market with Rosetta:\n\n1.  **The \"Rosetta Fix\":** Postal data is notoriously dirty (vague descriptions). Position Rosetta not just as a \"Tax Calculator,\" but as an **\"AI Sanitizer.\"** Your API response should include the *corrected* HS code (as shown in the JSON above). This reduces \"Return to Sender\" risks, which is the Post's biggest pain point.\n2.  **Register for UPU-CC:** Initiate the membership application immediately (takes 3-6 months).\n3.  **Build the \"Fiscal Injector\":** Develop a middleware logic that maps your payment references specifically to **UPU M33 V11** standards. If you get the mapping wrong, the barcode works, but the customs clearance fails.\n4.  **Partner with a Pilot DO:** Do not try to sell to all 192 countries. Pick a tech-forward Designated Operator (e.g., Canada Post, La Poste, or Correos) to run the Beta integration. Their endorsement serves as the \"TechCert\" fast track.\n\n**Immediate Next Step:** Direct Engineering to mock the `POST /assess` and `POST /capture` endpoints based on the spec above and prepare for the UPU PTC Sandbox application window (typically opens Q2)."
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