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Code Editor : Production_Manufacturing_Management_System_PRD.md
# Product Requirements Document (PRD) ## Production and Manufacturing Management System (PMMS) | Field | Detail | |---|---| | Document Version | 1.0 | | Status | Draft for Review | | Owner | Product/Operations Team | | Last Updated | July 8, 2026 | | Document Type | Full Product Requirements Document | --- ## 1. Executive Summary The Production and Manufacturing Management System (PMMS) is a centralized platform designed to give factory owners and operations managers full visibility and control over raw material inventory, material requirements planning, procurement, production costing, pricing, and order-to-delivery workflows. Today, most small-to-mid-size factories manage this information across spreadsheets, paper logs, and verbal communication — leading to stockouts, overproduction, inaccurate pricing, and lost profit. PMMS solves this by digitizing and automating the full material-to-product lifecycle: **what materials exist, what materials are needed, what they cost, and what the final product should be priced at** — all in one system. --- ## 2. Problem Statement Factory operators currently face: - **No real-time visibility** into raw material stock levels across warehouses/floors. - **Manual, error-prone calculation** of material requirements for production runs. - **Disconnected pricing** — material cost changes don't automatically reflect in product pricing. - **Reactive procurement** — materials are reordered only after stockouts halt production. - **No single source of truth** connecting inventory, production, and finance teams. --- ## 3. Goals & Objectives | Goal | Success Indicator | |---|---| | Real-time material inventory visibility | Stock accuracy ≥ 98% vs physical count | | Automated material requirement planning (MRP) | Reduce manual planning time by 80% | | Accurate, dynamic product pricing | Pricing updates reflect material cost within 24 hrs | | Reduce stockouts and overstock | Stockout incidents reduced by 70% | | Centralized production tracking | 100% of active work orders tracked in-system | --- ## 4. Scope ### 4.1 In Scope - Raw material inventory management (stock in/out, thresholds, locations) - Material Requirement Planning (MRP) based on Bill of Materials (BOM) - Procurement & purchase order management - Vendor/supplier management - Product costing & dynamic pricing engine - Production planning, scheduling & work orders - Quality control checkpoints - Sales order integration (basic) - Reporting & analytics dashboard - Role-based user access control ### 4.2 Out of Scope (Phase 1) - Full accounting/ERP-grade finance (GL, tax filing) - HR/payroll management - IoT machine-level sensor integration (Phase 3 consideration) - Multi-currency international logistics --- ## 5. Stakeholders & User Personas | Persona | Role | Key Needs | |---|---|---| | **Factory Owner/Admin** | Full system control | Business-wide visibility, pricing control, reports | | **Production Manager** | Plans & runs production | Work orders, material availability, scheduling | | **Inventory/Store Keeper** | Manages stock | Stock in/out, low-stock alerts, location tracking | | **Procurement Officer** | Buys materials | Purchase orders, vendor comparison, reorder alerts | | **Finance/Costing Officer** | Manages pricing & cost | Material cost trends, product cost breakdown | | **Quality Inspector** | QC checks | Inspection logs, pass/fail tracking, rejects | | **Sales/Order Staff** | Manages customer orders | Order status, stock availability for sales | --- ## 6. Core Modules & Functional Requirements ### 6.1 Raw Material Inventory Management **Purpose:** Know exactly what materials exist, where, and in what quantity — at all times. Functional Requirements: - FR1.1: Add/edit/delete material master records (name, SKU, unit of measure, category). - FR1.2: Track stock quantity per warehouse/location/bin. - FR1.3: Record stock-in (purchase receipt) and stock-out (used in production) transactions with timestamps and responsible user. - FR1.4: Set minimum stock threshold (reorder point) and maximum stock capacity per material. - FR1.5: Auto-generate low-stock alerts/notifications when quantity falls below threshold. - FR1.6: Batch/lot number and expiry date tracking (for perishable/sensitive materials). - FR1.7: Full stock movement history and audit trail. - FR1.8: Barcode/QR code generation and scanning support for stock entries. ### 6.2 Material Requirement Planning (MRP) **Purpose:** Calculate exactly how much material is needed for a given production order. Functional Requirements: - FR2.1: Define a **Bill of Materials (BOM)** per finished product — listing each raw material and quantity required per unit produced. - FR2.2: Given a production order quantity, auto-calculate total material requirement (Requirement = BOM quantity × order quantity). - FR2.3: Compare required materials against current stock and flag shortages automatically. - FR2.4: Auto-suggest purchase quantities for shortfalls, factoring in existing purchase orders in transit. - FR2.5: Support multi-level BOMs (sub-assemblies made from other manufactured components). - FR2.6: Forecast material needs based on production schedule/sales forecast for upcoming periods. ### 6.3 Procurement & Vendor Management Functional Requirements: - FR3.1: Maintain vendor/supplier master data (contact, lead time, payment terms, rating). - FR3.2: Create and track Purchase Orders (PO) linked to material shortages. - FR3.3: Compare vendor pricing for the same material (price history & benchmarking). - FR3.4: Track PO status (Draft → Sent → Confirmed → Partially Received → Received → Closed). - FR3.5: Auto-update inventory upon goods receipt against a PO. - FR3.6: Track vendor performance (on-time delivery %, quality rejection rate). ### 6.4 Pricing & Costing Engine **Purpose:** Ensure product pricing always reflects true material and production cost. Functional Requirements: - FR4.1: Calculate **material cost per unit** of finished product using BOM × current material unit price. - FR4.2: Add configurable cost layers: labor cost, machine/overhead cost, packaging cost, wastage %. - FR4.3: Auto-calculate **Total Manufacturing Cost per Unit** = Material Cost + Labor + Overhead + Wastage. - FR4.4: Configurable margin/markup rules to auto-generate **Suggested Selling Price**. - FR4.5: Price history tracking — see how product cost/price has changed over time as material prices fluctuate. - FR4.6: Alert when raw material price change impacts product margin below a defined threshold. - FR4.7: Support tiered/bulk pricing for wholesale customers. - FR4.8: Manual override with approval workflow for final pricing decisions. ### 6.5 Production Planning & Work Orders Functional Requirements: - FR5.1: Create production/work orders with product, quantity, target date, and assigned line/team. - FR5.2: Auto-check material availability before confirming a work order (via MRP module). - FR5.3: Track work order status (Planned → In Progress → QC → Completed → Closed). - FR5.4: Capture actual material consumption vs planned (variance tracking). - FR5.5: Production capacity/scheduling calendar view across lines/machines. - FR5.6: Record downtime/delay reasons. ### 6.6 Quality Control Functional Requirements: - FR6.1: Define QC checkpoints per product/process stage. - FR6.2: Log inspection results (Pass/Fail/Rework) with inspector and notes. - FR6.3: Track rejection rate by material batch, vendor, or production line. - FR6.4: Block shipment of failed-QC batches until resolved. ### 6.7 Sales & Order Management (Basic) Functional Requirements: - FR7.1: Record customer orders with product, quantity, and pricing pulled from the Pricing Engine. - FR7.2: Check finished goods stock availability against sales orders. - FR7.3: Trigger production work order automatically if stock is insufficient. - FR7.4: Track order fulfillment status. ### 6.8 Reporting & Analytics Dashboard Functional Requirements: - FR8.1: Real-time dashboard: current stock value, low-stock items, active work orders, pending POs. - FR8.2: Material consumption trend reports. - FR8.3: Cost & margin trend reports per product. - FR8.4: Vendor performance reports. - FR8.5: Production efficiency reports (planned vs actual output, downtime). - FR8.6: Exportable reports (PDF/Excel). ### 6.9 User & Role Management Functional Requirements: - FR9.1: Role-based access control (Admin, Production, Inventory, Procurement, Finance, QC, Sales). - FR9.2: Activity audit logs per user. - FR9.3: Multi-factory/multi-location support with data segregation. --- ## 7. Non-Functional Requirements | Category | Requirement | |---|---| | Performance | Dashboard loads in < 2 seconds for up to 50,000 SKUs | | Scalability | Support multiple factory locations under one account | | Availability | 99.5% uptime SLA | | Security | Role-based access, encrypted data at rest & in transit | | Usability | Mobile-responsive for floor staff (barcode scanning via phone) | | Auditability | Every stock/price change logged with user + timestamp | | Offline Support | Basic stock-entry offline sync for factory floor (Phase 2) | --- ## 8. Key Data Entities (High-Level Data Model) - **Material** (id, name, SKU, unit, category, current_stock, min_threshold, max_capacity, unit_cost) - **Warehouse/Location** (id, name, address) - **Stock Transaction** (id, material_id, type[in/out], quantity, warehouse_id, user_id, timestamp, reference_doc) - **Product** (id, name, SKU, category) - **BOM** (id, product_id, material_id, quantity_required_per_unit) - **Vendor** (id, name, contact, lead_time, rating) - **Purchase Order** (id, vendor_id, status, items[], expected_date) - **Work Order** (id, product_id, quantity, status, planned_date, actual_material_used[]) - **Pricing Record** (id, product_id, material_cost, labor_cost, overhead_cost, margin, final_price, effective_date) - **QC Log** (id, work_order_id, checkpoint, result, inspector_id, notes) - **Sales Order** (id, customer_id, product_id, quantity, price, status) - **User** (id, name, role, permissions) --- ## 9. Core Workflow Example: Material Requirement → Production → Pricing 1. Sales/Production Manager creates a **Production Order** for 1,000 units of Product A. 2. System pulls the **BOM** for Product A and calculates total material requirement. 3. System checks current **stock levels** for each required material. 4. If shortfall exists → system flags shortage and suggests a **Purchase Order** with recommended quantity and preferred vendor (based on price/lead time). 5. Once materials are available, **Work Order** is confirmed and material is deducted from stock upon usage. 6. **Costing Engine** recalculates cost per unit using latest material prices + labor/overhead. 7. **Pricing Engine** updates suggested selling price based on configured margin. 8. Finished goods are QC-checked, then moved to finished goods inventory, ready for sales fulfillment. --- ## 10. Suggested Technology Stack | Layer | Suggestion | |---|---| | Frontend | React.js (responsive web) + mobile-friendly PWA | | Backend | Node.js / Python (Django or FastAPI) | | Database | PostgreSQL (relational, strong for inventory/BOM relationships) | | Auth | JWT-based auth with role-based access control | | Hosting | Cloud (AWS/GCP/Azure) with regional deployment | | Reporting | Embedded BI (e.g., Metabase) or custom dashboard with charting library | | Barcode/QR | Native camera-based scanning via web/mobile | *(This is a suggested stack — final choice depends on team expertise and budget.)* --- ## 11. Success Metrics (KPIs) - Inventory accuracy rate (target ≥ 98%) - Stockout frequency (target: reduce by 70% within 6 months) - Time to generate a material requirement report (target: < 1 minute, from hours manually) - Pricing update turnaround after material cost change (target: < 24 hours) - Production plan adherence (planned vs actual output %) - User adoption rate across departments --- ## 12. Rollout Roadmap | Phase | Focus | Timeline (Indicative) | |---|---|---| | Phase 1 (MVP) | Material inventory, BOM, MRP, basic costing/pricing | Months 1–3 | | Phase 2 | Procurement, vendor management, work orders, QC | Months 4–6 | | Phase 3 | Sales integration, advanced analytics, multi-factory support | Months 7–9 | | Phase 4 | Offline sync, IoT/machine integration, mobile app | Months 10–12 | --- ## 13. Risks & Assumptions | Risk/Assumption | Mitigation | |---|---| | Factory staff may resist digital transition from paper logs | Provide simple UI + training + phased rollout | | Inaccurate initial data entry (opening stock) | Dedicated data migration/audit phase before go-live | | Material price volatility affecting pricing accuracy | Real-time price update triggers + manual override option | | Multi-location sync complexity | Start single-factory MVP, expand after validation | | Internet connectivity issues on factory floor | Offline-first stock entry with sync queue (Phase 4) | --- ## 14. Open Questions - Should the system integrate with existing accounting software (e.g., QuickBooks, Tally) for financial sync? - Is multi-currency support needed for material procurement from overseas vendors? - What level of machine/IoT integration is expected for real-time production tracking? - Will customers/vendors need portal access, or is this fully internal-facing? --- ## 15. Appendix: Glossary - **BOM (Bill of Materials):** The list of raw materials and quantities required to produce one unit of a finished product. - **MRP (Material Requirement Planning):** The process of calculating material needs based on production demand. - **PO (Purchase Order):** A formal order sent to a vendor to procure materials. - **SKU (Stock Keeping Unit):** Unique identifier for each material or product. - **Reorder Point:** The stock level at which new procurement should be triggered. --- *End of Document*
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