Modules (Components) of ERP

The building blocks of an ERP system

An ERP system is built from modules — separate but connected parts, each handling one functional area of the business. Because all modules share the same central database, they work together seamlessly: data entered in one module is instantly available to the others. An organisation can begin with the modules it needs most and add more later. The main modules are described below.

1. Finance and Accounting module

Often considered the heart of an ERP system, this module manages the organisation's money. It handles the general ledger, accounts receivable (money owed by customers), accounts payable (money owed to suppliers), cash and bank management, budgeting, taxation, and financial reporting (such as the balance sheet and profit-and-loss account). Because every transaction anywhere in the business ultimately has a financial effect, this module draws data from all the others and keeps the accounts continuously up to date.

2. Human Resources (HR) module

This module manages the organisation's people. It maintains employee records, handles recruitment, attendance and leave, payroll (salary and wage calculation), training, and performance appraisal. By automating payroll and record-keeping, it reduces manual effort and errors and helps the organisation manage its workforce efficiently.

3. Production / Manufacturing module

This module plans and controls the making of goods. It manages the bill of materials, production planning and scheduling, shop-floor control, and quality control, ensuring that products are manufactured in the right quantity, at the right time, and to the required standard. It grew directly out of the MRP/MRP II systems from which ERP evolved.

4. Supply Chain Management (SCM) module

This module manages the flow of materials and goods from suppliers, through the organisation, to customers. It covers procurement (purchasing), inventory and warehouse management, order processing, and logistics/distribution. Its aim is to have the right goods in the right place at the right time, while keeping stock and transport costs low.

5. Sales and Distribution / Customer Relationship Management (CRM) module

This module manages everything to do with customers and selling. It handles enquiries, quotations, sales orders, invoicing, dispatch, and after-sales service, and — through its CRM part — keeps a full record of each customer's contacts, purchases, and preferences. This helps the business serve customers better, build loyalty, and increase sales.

6. Other common modules

Depending on the organisation, an ERP may also include modules for purchasing/procurement (sometimes separate from SCM), inventory/stores, project management, and business intelligence/reporting (which turns the data into dashboards and analytical reports for managers).

How the modules work together