Unit 6.4: Enterprise Resource Planning (ERP) Systems Explained

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Unit 6.4

Enterprise Resource Planning (ERP) Systems Explained

IT 233: Business Information Systems

Today's Learning Objectives 🎯

By the end of this session, you will be able to:

  • ✅ Define ERP and its core concept of integration.
  • ✅ Explain how ERP systems solve the problem of information silos.
  • ✅ Identify the common modules of an ERP system.
  • ✅ Describe the major benefits and challenges of implementation.

The Problem: Information Silos

Before ERP, departments often worked in isolation, creating "information silos."

Interactive: Visualize the Silo Problem

Click each department to reveal its data. Then click Connect with ERP to see integration.

Sales
Orders: 42
Spreadsheet
No stock info
Finance
Revenue: Est.
Accounting SW
No order data
HR
Staff: 120
Paper records
No financials
Supply Chain
Stock: Unknown
Manual count
No sales data
Departments are isolated — data does not flow between them.
ERP Evolution Timeline
Before vs After ERP

The Cost of Silos

Result: Data duplication, inconsistency, and poor visibility across the business.

The Solution: What is an ERP?

The Solution: What is an ERP?

Enterprise Resource Planning (ERP): A suite of integrated software applications that an organization uses to collect, store, manage, and interpret data from many business activities.

  • It breaks down information silos by creating a single, unified platform.
  • It acts as the central nervous system for the entire organization.
  • Key vendors include SAP, Oracle, and Microsoft Dynamics 365.

🎬 Watch: What ERP Software Is

ERP Integrated Puzzle Hub

The Core Concept: A Single Source of Truth ⚡

ERPs achieve integration through a central database.

This ensures every department is working with the same, up-to-date information, eliminating guesswork and errors.

Single Source of Truth
Core vs Extended ERP

How it Works: An Integrated Workflow

An event in one module automatically triggers updates in others.

Example: Processing a Sales Order

  1. Sales Module: A new customer order is entered.
  2. ➡️ SCM Module: Inventory levels are automatically checked and updated. A shipping order is created.
  3. ➡️ Finance Module: An invoice is generated and the customer's credit is checked.
  4. ➡️ Management Dashboard: Sales forecasts and revenue reports are updated in real-time.

Interactive: ERP Workflow Step-Through

Click Next Step to trace how a single sales order triggers every ERP module automatically.

🛒Sales ModuleCustomer places an order for 10 units of Product A — entry made once in the ERP.
📦SCM ModuleInventory checked automatically — 58 units available. Outbound shipping order created.
💳Finance ModuleInvoice of NPR 50,000 generated. Customer credit limit verified against the central database.
👷HCM ModuleWarehouse staff roster updated to schedule dispatch team for shipment handling.
📊Management DashboardRevenue forecasts and KPI reports updated in real-time — no manual data entry needed.
Click "Next Step" to start the order process.

Key Characteristics of ERP Systems 🔍

  • Integrated System: All modules are interconnected and work together seamlessly.
  • Central Database: All data is stored in one place, eliminating redundancy and inconsistency.
  • Standardized Processes: Adopts industry "best practices," which can improve efficiency but requires organizational change.
  • Real-Time Operation: Data is updated instantly across all modules as business transactions occur.

A Look Inside: Common ERP Modules

Financial Management

  • General Ledger
  • Accounts Payable/Receivable
  • Budgeting

Human Capital (HCM)

  • Payroll
  • Recruiting
  • Performance Mgt.

Supply Chain (SCM)

  • Inventory Control
  • Procurement
  • Logistics

Other common modules include Manufacturing and Customer Relationship Management (CRM).

Interactive: ERP Module Match Challenge

Which ERP module handles each business task? Click the correct answer for all four questions.

Score: 0 / 4
Cloud ERP Rain

The Two Sides: Benefits vs. Challenges

Benefits 📈

  • Improved efficiency & automation
  • Better, data-driven decision-making
  • Enhanced data security & control
  • Increased collaboration between departments

Challenges 📉

  • Extremely high cost (software, implementation, maintenance)
  • High complexity and long implementation times
  • Employee resistance to process changes
  • Vendor lock-in makes it hard to switch systems

Interactive: Sort It — Benefit or Challenge?

Click each card and assign it to the correct column. All 8 must be placed correctly to win.

Benefits
Challenges

🛒 Real Case: Lidl Pulls the Plug

German supermarket chain Lidl began replacing its in-house inventory system with SAP around 2011.

  • Lidl valued its stock at purchase price; the standard software was built around retail price.
  • Instead of changing its process, Lidl kept customising the software.
  • Costs and delays grew, and in 2018 Lidl abandoned the project and returned to its old system.
Lesson: ERP "best practices" clash with the way a firm already works. Decide early: change the process, or don't buy the package.

🎬 Watch: Why ERP Projects Fail

Practical Application: ERP in Nepal 🇳🇵

Example: A Nepali Hydropower Company

A company like Butwal Power Company could use an ERP to:

  • Finance Module: Manage large-scale project budgets, track assets, and handle international investor reporting.
  • HCM Module: Manage payroll and training for engineers and staff across multiple remote sites.
  • SCM Module: Procure and track high-value equipment (like turbines) from international suppliers.

Result: A unified view of complex operations, improving financial control and project management.

🚦 How Do You Switch On an ERP?

Big bang
All modules, all sites, one weekend. Fast, but highest risk.
Phased
One module or site at a time. Lower risk, but slower and needs temporary links.
Parallel
Run old and new together until the new one is proven. Safe, but double work.
Pilot
Go live at one branch first, learn, then roll out.

✅ What Makes ERP Projects Succeed?

  • Top-management support and a clear business reason.
  • Process redesign first, with minimal customisation.
  • Clean data migrated from the old systems.
  • Training and change management for every user.
  • An experienced partner and a realistic budget and timeline.

🧮 Worked Example: A Phased ERP Rollout

Illustrative: a cement manufacturer with a factory in Nawalparasi and depots across Nepal.

PhaseGo liveWhy this order?
1Finance + procurementGets cost control and VAT reporting right first.
2Inventory + depots (pilot at 1 depot)Stock is the biggest source of errors; test at one site.
3Sales + dealer ordersDealers see live stock only once inventory is reliable.
4HR + payrollLeast urgent; old payroll keeps working meanwhile.

Risk to watch: phases 1–3 need temporary links to the old systems.

☁️ On-Premise vs Cloud ERP

🏢 On-premise
  • Bought and installed on the firm's own servers.
  • Large upfront cost; full control and customisation.
  • Firm's IT team handles upgrades and security.
☁️ Cloud (SaaS)
  • Rented monthly, run by the vendor.
  • Low upfront cost; faster to start; less customisation.
  • Needs reliable internet; data may be stored abroad.

More on cloud models in Unit 6.6.

🎬 Watch: Cloud vs On-Premises ERP

Interactive: ERP Knowledge Quiz (1/2)

Test your understanding. Select the best answer for each question.

Score: 0 / 2

Interactive: ERP Knowledge Quiz (2/2)

Test your understanding. Select the best answer for each question.

Score: 0 / 2

💬 Discuss: ERP for a Nepali Business

  • A family-owned trading company with 3 shops is thinking about ERP. Would you advise it to go ahead?
  • Which approach (big bang, phased, parallel, pilot) would you choose, and why?
  • What would worry you most: cost, staff resistance or internet reliability?

Summary & Key Takeaways 📊

  • Integration is Key: ERPs unite all core business functions (finance, HR, SCM) onto a single, shared platform.
  • Single Source of Truth: They use a central database to eliminate information silos and ensure data consistency.
  • High Risk, High Reward: While benefits like efficiency and better decision-making are immense, implementation is a major undertaking due to high costs, complexity, and the need for organizational change.

Exam Practice 📝

Short answer

  1. What is an ERP system?
  2. List four common ERP modules.
  3. Give two benefits and two challenges of ERP.

Exam Practice 📝 (continued)

Long answer

  1. Explain the concept of ERP and its key characteristics, with examples of common modules.
  2. Discuss the benefits and challenges of implementing an ERP system in a Nepali organization.

Revise the answers in the full note.

Image & Video Credits

Images

  • Interior view of Newcastle (NI) brand new Lidl Store: Eric Jones, CC BY-SA 2.0, via Wikimedia Commons (geograph.org.uk 8190299)
  • Big bang vs phased rollout diagram: course author (original), CC BY 4.0

Videos (YouTube)

  • Arcus Universe, "What is ERP software" (6–94 s)
  • Marcus Harris Software & Tech Attorney, "The Overlooked Reason ERP Implementations Fail" (27–96 s)
  • The ERP Platform Experts, "Cloud ERP vs. On-Premises ERP: Which Should You Be Using?" (24–108 s)

Thank You!

Next Topic: Unit 6.5 - ERP and the Order-to-Cash Cycle

We will explore how businesses manage their interactions with current and potential customers.

📖 Read the full note