Core ERP modules
ERP modules are individual software components that handle specific business functions. They share a common database and seamlessly integrate. Organisations can implement a subset initially and add modules as they grow. This article covers the most common core modules.
Financials
General ledger, AP/AR, fixed assets, budgeting, consolidation.
HCM
Payroll, recruitment, time tracking, talent management.
Inventory
Stock control, warehouse management, replenishment.
Manufacturing
BOM, MRP, production scheduling, quality control.
CRM
Sales pipeline, contact management, customer service.
Procurement
Purchase orders, vendor management, sourcing.
Project
Planning, costing, billing, resource allocation.
BI & reporting
Dashboards, analytics, KPIs, regulatory reports.
1. Financial management (core of any ERP)
Functions: General ledger, accounts payable/receivable, cash management, fixed assets, budgeting, and consolidation. This module ensures accurate financial statements and compliance (IFRS, VAT, etc.). Every ERP has this as mandatory module.
2. Human capital management (HCM)
Functions: Employee records, payroll, benefits administration, time and attendance, recruitment, performance reviews. Some ERPs also include talent management and succession planning.
3. Supply chain & inventory management
Functions: Inventory tracking, warehouse management, order fulfilment, demand forecasting, and logistics. Often tightly integrated with procurement and sales.
4. Manufacturing
Functions: Bill of materials (BOM), MRP (material requirements planning), capacity planning, shop floor control, quality management. Essential for production companies.
5. Customer relationship management (CRM)
Functions: Sales force automation, lead and opportunity management, marketing campaigns, customer service and support. Many ERPs include CRM; specialised ones offer deeper functionality.
6. Procurement / purchasing
Functions: Supplier management, purchase requisitions, purchase orders, vendor evaluation, contract management. Streamlines the acquisition of goods and services.
7. Project management
Functions: Project planning, budgeting, resource allocation, time tracking, project billing. Common in professional services, construction, and engineering firms.
8. Business intelligence & reporting
Functions: Dashboards, KPIs, ad‑hoc reporting, financial consolidation, and regulatory compliance reports. Often embedded across all modules.
Modular flexibility: Modern ERPs allow you to activate only the modules you need. For example, a service company might skip manufacturing, while a retailer may focus on inventory and CRM.
Module integration in action
| Business event | Modules involved |
|---|---|
| Sales order entry | CRM → Inventory → Finance (receivables) |
| Hiring an employee | HCM → Payroll → Finance (cost allocation) |
| Production run | Manufacturing → Inventory → Procurement → Finance |
| Monthly closing | All modules feed into Financials → BI reports |
Key Takeaways
- ERP modules share one database, ensuring consistency across finance, HR, supply chain, etc.
- Financials is the only truly mandatory module; others are selected based on business needs.
- Modules can be implemented in phases, reducing risk and spreading investment.
- Industry‑specific modules (e.g., healthcare, retail) exist but core ones are universal.
How many modules does a typical ERP have? Most offer 20–50 modules, but 5–10 core ones cover 80% of business needs.
Can I add modules from different vendors? Yes, via integration (APIs/middleware). But staying within one ERP suite reduces integration costs.
What is an "extended module"? Modules beyond core operations, e.g., e‑commerce, vendor portal, or advanced analytics, often from third‑party developers.
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