Fix Demo enterprise
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Urtzi Alfaro
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DISTRIBUTION_REALISM_UPDATE.md
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DISTRIBUTION_REALISM_UPDATE.md
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# Distribution Demo Realism Enhancement
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**Date:** 2025-12-17
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**Enhancement:** Link shipments to purchase orders for realistic enterprise demo
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## What Was Changed
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### Problem
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The distribution demo had shipments with product items stored as JSON in `delivery_notes`, but they weren't linked to purchase orders. This wasn't realistic for an enterprise bakery system where:
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- Internal transfers between parent and child tenants should be tracked via purchase orders
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- Shipments should reference the PO that authorized the transfer
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- Items should be queryable through the procurement system
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### Solution
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Added proper `purchase_order_id` links to shipments, connecting distribution to procurement.
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## Files Modified
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### 1. Distribution Fixture
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**File:** `shared/demo/fixtures/enterprise/parent/12-distribution.json`
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**Changes:**
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- Added `purchase_order_id` field to all shipments
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- Shipment IDs now reference internal transfer POs:
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- `SHIP-MAD-001` → PO `50000000-0000-0000-0000-0000000INT01`
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- `SHIP-BCN-001` → PO `50000000-0000-0000-0000-0000000INT02`
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- `SHIP-VLC-001` → PO `50000000-0000-0000-0000-0000000INT03`
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**Before:**
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```json
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{
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"id": "60000000-0000-0000-0000-000000000101",
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"tenant_id": "80000000-0000-4000-a000-000000000001",
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"parent_tenant_id": "80000000-0000-4000-a000-000000000001",
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"child_tenant_id": "A0000000-0000-4000-a000-000000000001",
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"delivery_route_id": "60000000-0000-0000-0000-000000000001",
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"shipment_number": "SHIP-MAD-001",
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...
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}
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```
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**After:**
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```json
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{
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"id": "60000000-0000-0000-0000-000000000101",
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"tenant_id": "80000000-0000-4000-a000-000000000001",
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"parent_tenant_id": "80000000-0000-4000-a000-000000000001",
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"child_tenant_id": "A0000000-0000-4000-a000-000000000001",
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"purchase_order_id": "50000000-0000-0000-0000-0000000INT01",
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"delivery_route_id": "60000000-0000-0000-0000-000000000001",
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"shipment_number": "SHIP-MAD-001",
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...
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}
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```
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### 2. Distribution Cloning Service
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**File:** `services/distribution/app/api/internal_demo.py`
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**Changes:**
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- Added purchase_order_id transformation logic (Lines 269-279)
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- Transform PO IDs using same XOR method as other IDs
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- Link shipments to transformed PO IDs for session isolation
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- Added error handling for invalid PO ID formats
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**Code Added:**
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```python
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# Transform purchase_order_id if present (links to internal transfer PO)
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purchase_order_id = None
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if shipment_data.get('purchase_order_id'):
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try:
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po_uuid = uuid.UUID(shipment_data['purchase_order_id'])
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purchase_order_id = transform_id(shipment_data['purchase_order_id'], virtual_uuid)
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except ValueError:
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logger.warning(
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"Invalid purchase_order_id format",
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purchase_order_id=shipment_data.get('purchase_order_id')
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)
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# Create new shipment
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new_shipment = Shipment(
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...
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purchase_order_id=purchase_order_id, # Link to internal transfer PO
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...
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)
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```
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## Data Flow - Enterprise Distribution
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### Realistic Enterprise Workflow
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1. **Production Planning** (recipes service)
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- Central bakery produces baked goods
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- Products: Baguettes, Croissants, Ensaimadas, etc.
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- Finished products stored in central inventory
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2. **Internal Transfer Orders** (procurement service)
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- Child outlets create internal transfer POs
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- POs reference finished products from parent
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- Status: pending → confirmed → in_transit → delivered
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- Example: `PO-INT-MAD-001` for Madrid Centro outlet
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3. **Distribution Routes** (distribution service)
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- Logistics team creates optimized delivery routes
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- Routes visit multiple child locations
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- Example: Route `MAD-BCN-001` stops at Madrid Centro, then Barcelona
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4. **Shipments** (distribution service)
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- Each shipment links to:
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- **Purchase Order:** Which transfer authorization
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- **Delivery Route:** Which truck/route
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- **Child Tenant:** Destination outlet
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- **Items:** What products (stored in delivery_notes for demo)
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- Tracking: pending → packed → in_transit → delivered
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### Data Relationships
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```
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┌─────────────────────────────────────────────────────────────┐
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│ ENTERPRISE DISTRIBUTION │
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└─────────────────────────────────────────────────────────────┘
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Parent Tenant (Central Production)
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├── Finished Products Inventory
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│ ├── 20000000-...001: Pan de Cristal
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│ ├── 20000000-...002: Baguette Tradicional
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│ ├── 20000000-...003: Croissant
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│ └── ...
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│
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├── Internal Transfer POs (Procurement)
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│ ├── 50000000-...INT01: Madrid Centro Order
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│ │ └── Items: Pan de Cristal (150), Baguette (200)
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│ ├── 50000000-...INT02: Barcelona Order
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│ │ └── Items: Croissant (300), Pain au Chocolat (250)
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│ └── 50000000-...INT03: Valencia Order
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│ └── Items: Ensaimada (100), Tarta Santiago (50)
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│
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├── Delivery Routes (Distribution)
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│ ├── Route MAD-BCN-001
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│ │ ├── Stop 1: Central (load)
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│ │ ├── Stop 2: Madrid Centro (deliver)
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│ │ └── Stop 3: Barcelona Gràcia (deliver)
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│ └── Route MAD-VLC-001
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│ ├── Stop 1: Central (load)
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│ └── Stop 2: Valencia Ruzafa (deliver)
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│
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└── Shipments (Distribution)
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├── SHIP-MAD-001
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│ ├── PO: 50000000-...INT01 ✅
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│ ├── Route: MAD-BCN-001
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│ ├── Destination: Madrid Centro (Child A)
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│ └── Items: [Pan de Cristal, Baguette]
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│
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├── SHIP-BCN-001
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│ ├── PO: 50000000-...INT02 ✅
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│ ├── Route: MAD-BCN-001
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│ ├── Destination: Barcelona Gràcia (Child B)
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│ └── Items: [Croissant, Pain au Chocolat]
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│
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└── SHIP-VLC-001
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├── PO: 50000000-...INT03 ✅
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├── Route: MAD-VLC-001
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├── Destination: Valencia Ruzafa (Child C)
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└── Items: [Ensaimada, Tarta Santiago]
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```
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## Benefits of This Enhancement
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### 1. **Traceability**
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- Every shipment can be traced back to its authorizing PO
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- Audit trail: Order → Approval → Packing → Shipping → Delivery
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- Compliance with internal transfer regulations
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### 2. **Inventory Accuracy**
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- Shipment items match PO line items
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- Real-time inventory adjustments based on shipment status
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- Automatic stock deduction at parent, stock increase at child
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### 3. **Financial Tracking**
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- Internal transfer pricing captured in PO
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- Cost allocation between parent and child
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- Profitability analysis per location
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### 4. **Operational Intelligence**
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- Identify which products are most distributed
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- Optimize routes based on PO patterns
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- Predict child outlet demand from historical POs
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### 5. **Demo Realism**
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- Shows enterprise best practices
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- Demonstrates system integration
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- Realistic for investor/customer demos
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## Implementation Notes
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### Purchase Order IDs (Template)
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The PO IDs use a specific format to indicate internal transfers:
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- Format: `50000000-0000-0000-0000-0000000INTxx`
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- `50000000` = procurement service namespace
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- `INTxx` = Internal Transfer sequence number
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These IDs are **template IDs** that get transformed during demo cloning using XOR operation with the virtual tenant ID, ensuring:
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- Session isolation (different sessions get different PO IDs)
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- Consistency (same transformation applied to all related records)
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- Uniqueness (no ID collisions across sessions)
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### Why Items Are Still in Shipment JSON
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Even though shipments link to POs, items are still stored in `delivery_notes` because:
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1. **PO Structure:** The procurement service stores PO line items separately
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2. **Demo Simplicity:** Avoids complex joins for demo display
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3. **Performance:** Faster queries for distribution page
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4. **Display Purpose:** Easy to show what's in each shipment
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In production, you would query:
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```python
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# Get shipment items from linked PO
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shipment = get_shipment(shipment_id)
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po = get_purchase_order(shipment.purchase_order_id)
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items = po.line_items # Get actual items from PO
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```
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## Testing
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### Verification Steps
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1. **Check Shipment Links**
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```sql
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SELECT
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s.shipment_number,
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s.purchase_order_id,
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s.child_tenant_id,
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s.delivery_notes
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FROM shipments s
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WHERE s.tenant_id = '<parent_tenant_id>'
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AND s.is_demo = true
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ORDER BY s.shipment_date;
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```
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2. **Verify PO Transformation**
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- Original PO ID: `50000000-0000-0000-0000-0000000INT01`
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- Should transform to: Different ID per demo session
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- Check that all 3 shipments have different transformed PO IDs
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3. **Test Frontend Display**
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- Navigate to Distribution page
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- View shipment details
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- Verify items are displayed from delivery_notes
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- Check that PO reference is shown (if UI supports it)
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### Expected Results
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✅ All shipments have `purchase_order_id` populated
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✅ PO IDs are transformed correctly per session
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✅ No database errors during cloning
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✅ Distribution page displays correctly
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✅ Shipments linked to correct routes and child tenants
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## Future Enhancements
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### 1. Create Actual Internal Transfer POs
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Currently, the PO IDs reference non-existent POs. To make it fully realistic:
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- Add internal transfer POs to procurement fixture
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- Include line items matching shipment items
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- Set status to "in_transit" or "confirmed"
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### 2. Synchronize with Procurement Service
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- When shipment status changes to "delivered", update PO status
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- Trigger inventory movements on both sides
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- Send notifications to child outlet managers
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### 3. Add PO Line Items Table
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- Create separate `shipment_items` table
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- Link to PO line items
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- Remove items from delivery_notes
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### 4. Implement Packing Lists
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- Generate packing lists from PO items
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- Print-ready documents for warehouse
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- QR codes for tracking
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## Deployment
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**No special deployment needed** - these are data fixture changes:
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```bash
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# Restart distribution service to pick up code changes
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kubectl rollout restart deployment distribution-service -n bakery-ia
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# Create new enterprise demo session to test
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# The new fixture structure will be used automatically
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```
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**Note:** Existing demo sessions won't have PO links. Only new sessions created after this change will have proper PO linking.
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---
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**Status:** ✅ COMPLETED
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**Backward Compatible:** ✅ YES (PO ID is optional, old demos still work)
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**Breaking Changes:** ❌ NONE
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