77  Enterprise Resource Planning

77.1 Concept

Enterprise Resource Planning (ERP) = an integrated software system that automates and connects all key business processes — finance, HR, manufacturing, supply chain, sales, procurement, services — onto a single shared database. The term was coined by Gartner Group (1990). Joseph Orlicky (1975) created MRP; Oliver Wight extended to MRP-II (1980s); ERP emerged as next-generation in the 1990s with SAP R/3 (1992).

77.2 Evolution: BOM → MRP → MRP-II → ERP → ERP-II → Cloud ERP

TipERP evolution
Era System Focus
1960s Inventory Control / BOM Stock
1970s MRP (Material Requirements Planning) — Orlicky 1975 Materials + production
1980s MRP-II — Oliver Wight Adds capacity, finance
1990s ERP — Gartner 1990 Enterprise-wide integration
2000s ERP-II / Extended ERP CRM + SCM + e-business
2010s Cloud ERP / SaaS Subscription, multi-tenant
2020s AI / Composable / Postmodern ERP Modular, AI-augmented

77.3 Major ERP Vendors

TipLeading ERP players
  • SAP — S/4HANA, R/3 legacy.
  • Oracle — NetSuite, Fusion Cloud ERP, JD Edwards, PeopleSoft.
  • Microsoft Dynamics 365.
  • Infor — CloudSuite.
  • Sage — SMB.
  • Workday — HR/Finance.
  • Ramco — India.
  • Tally — India SMB.
  • Zoho — India SMB.
  • Odoo — open-source.

77.4 ERP Modules

TipCommon ERP modules
  • Finance & Accounting — GL, AP/AR, Fixed Assets.
  • Human Capital Management (HCM) — payroll, recruitment.
  • Manufacturing — BOM, MRP, shop floor.
  • Supply Chain — procurement, inventory, logistics.
  • Sales & Distribution.
  • CRM.
  • Project Management.
  • Quality Management.
  • Plant Maintenance.
  • Business Intelligence / Analytics.

77.5 Benefits and Challenges

TipERP benefits
  • Single source of truth.
  • Process standardisation.
  • Real-time visibility.
  • Reduced inventory and lead times.
  • Better decision-making.
  • Compliance — financial, regulatory.
  • Scalability.
TipERP implementation challenges
  • High cost — licence + customisation + training.
  • Long implementation — 1-3 years.
  • Change resistance.
  • Customisation traps.
  • Data migration.
  • Vendor lock-in.
  • Integration with legacy systems.
  • High failure rate — 30-50 % do not deliver expected benefits.

77.6 ERP Implementation Approach

TipImplementation strategies
  • Big Bang — all modules at once.
  • Phased — module by module.
  • Parallel — old and new together.
  • Pilot — single site first.
  • Geographic rollout — by location.

77.7 ERP Lifecycle (Markus & Tanis)

Tip4-phase ERP lifecycle — Markus-Tanis (2000)
  1. Chartering — strategic decision.
  2. Project (Configure, Customise, Test, Train).
  3. Shakedown — post go-live stabilisation.
  4. Onward and Upward — continuous improvement.

77.8 Famous ERP Failures and Successes

TipERP cases
  • Success: Cisco (1994 SAP), Tata Steel (SAP), HUL (SAP), Reliance (SAP).
  • Failure / Pain: Hershey (1999 SAP, missed Halloween), Nike (2000 i2), HP (2004 SAP), Avon (2013 cancelled), Lidl (2018 SAP S/4 abandoned ~€500 m loss).

77.9 Critical Success Factors

TipCSFs for ERP
  • Top management commitment.
  • Clear business goals.
  • Project management.
  • Change management.
  • User training.
  • Data quality.
  • Vendor selection.
  • Avoid over-customisation.
  • Choose right consultant.

77.11 Indian ERP Landscape

TipIndian ERP context
  • SAP — dominant in large enterprises.
  • Oracle / NetSuite — large + mid-market.
  • Tally — SMB de facto standard.
  • Ramco — Indian global player, aviation HCM.
  • Zoho One — born-cloud Indian.
  • Microsoft Dynamics 365.
  • GSTN / e-Invoice / e-Way Bill integration mandatory.
  • Open-source: Odoo, ERPNext (Frappe — Indian).

77.12 Practice Questions

Q 01GartnerMedium

The term ERP was coined in 1990 by:

  • AGartner
  • BSAP
  • COracle
  • DIBM
View solution
Correct Option: A
Gartner Group (1990).
Q 02OrlickyHard

MRP (1975) was developed by:

  • AJoseph Orlicky
  • BOliver Wight
  • CSAP
  • DGartner
View solution
Correct Option: A
Joseph Orlicky, IBM (1975).
Q 03SAP R/3Medium

SAP R/3 was launched in:

  • A1980
  • B1992
  • C2000
  • D2010
View solution
Correct Option: B
SAP R/3 in 1992; S/4HANA in 2015.
Q 04ModulesEasy

A typical ERP does NOT include a module for:

  • AFinance
  • BHR
  • CManufacturing
  • DStock-broking
View solution
Correct Option: D
Stock-broking is industry-specific software.
Q 05Big BangMedium

"Big Bang" implementation means:

  • AAll modules at once
  • BModule by module
  • CParallel run
  • DPilot
View solution
Correct Option: A
Cutover everything together.
Q 06MarkusHard

The Markus-Tanis ERP lifecycle has:

  • A3 phases
  • B4 phases
  • C5 phases
  • D7 phases
View solution
Correct Option: B
Chartering · Project · Shakedown · Onward.
Q 07HersheyHard

Famous ERP failure that missed Halloween:

  • AHershey
  • BNike
  • CAvon
  • DLidl
View solution
Correct Option: A
Hershey SAP 1999 missed Halloween shipments.
Q 08TallyMedium

Tally is dominant in:

  • AIndian SMB
  • BUS Fortune 500
  • CPharma
  • DTelecoms
View solution
Correct Option: A
Tally Solutions, Bengaluru.
Q 09S/4HANAMedium

SAP S/4HANA was launched in:

  • A2010
  • B2015
  • C2020
  • D2023
View solution
Correct Option: B
S/4HANA in 2015.
Q 10CloudMedium

Born-cloud ERP examples include:

  • ANetSuite, Workday
  • BSAP R/3
  • CJD Edwards
  • DOracle EBS
View solution
Correct Option: A
SaaS-native.
Q 11RamcoHard

Ramco Systems is an Indian ERP player headquartered in:

  • AChennai
  • BBengaluru
  • CHyderabad
  • DMumbai
View solution
Correct Option: A
Ramco Systems Ltd., Chennai.
Q 12MRP-IIHard

MRP-II extended MRP by adding:

  • ACapacity and finance
  • BMarketing only
  • CCloud
  • DAI
View solution
Correct Option: A
Manufacturing Resource Planning — Wight 1980s.
Q 13ERPNextHard

ERPNext is built by:

  • AFrappe Technologies (India)
  • BSAP
  • COracle
  • DMicrosoft
View solution
Correct Option: A
Open-source Indian ERP.
Q 14CSFMedium

Most cited ERP-implementation success factor:

  • ATop-management commitment
  • BCheapest vendor
  • CBig bang
  • DNo training
View solution
Correct Option: A
Top-management commitment is #1 CSF.
Q 15ComposableHard

"Composable ERP" trend was articulated by:

  • AGartner (2020)
  • BSAP
  • COracle
  • DIBM
View solution
Correct Option: A
Gartner research, 2020.

77.12.1 Advanced Format Questions

AR 1Assertion-ReasonHard

A: ERP integrates business processes on a single database.
R: Composable ERP (Gartner 2020) makes ERP modular and API-driven.

  • ABoth true; R explains A
  • BBoth true; R does not explain A
  • CA true, R false
  • DA false, R true
View solution
Correct Option: B
S 1Statement-basedMedium

ERP modules: (i) Finance. (ii) HR. (iii) Manufacturing. (iv) SCM.

  • AAll four (+ CRM, BI)
  • B(i) and (ii) only
  • C(iii) and (iv) only
  • D(i) only
View solution
Correct Option: A
S 2Statement-basedHard

Implementation approaches: (i) Big Bang. (ii) Phased. (iii) Parallel. (iv) Pilot.

  • AAll four
  • B(i) and (ii) only
  • C(iii) and (iv) only
  • D(i), (ii), (iii) only
View solution
Correct Option: A

77.13 Quick Recall

ImportantQuick recall
  • ERP — Gartner (1990); integrated business processes on one database.
  • Evolution: BOM → MRP (Orlicky 1975) → MRP-II (Wight 1980s) → ERP (1990s; SAP R/3 1992) → ERP-II → Cloud → Composable.
  • Vendors: SAP S/4HANA · Oracle Fusion/NetSuite · Microsoft Dynamics 365 · Infor · Sage · Workday · Ramco · Tally · Zoho · ERPNext (Indian) · Odoo.
  • Modules: Finance · HCM · Manufacturing · Supply Chain · Sales · CRM · Project · Quality · Maintenance · BI.
  • Implementation: Big Bang · Phased · Parallel · Pilot · Geographic.
  • Markus-Tanis lifecycle (2000): Chartering · Project · Shakedown · Onward.
  • CSFs: Top-mgmt commitment · clear goals · PM · change mgmt · training · data quality · vendor · avoid customisation · consultant.
  • Failures: Hershey 1999 · Nike 2000 · HP 2004 · Avon 2013 · Lidl 2018.
  • Modern: Cloud/SaaS · Two-tier · Composable (Gartner 2020) · AI/ML co-pilots (SAP Joule, Oracle AI) · mobile · embedded analytics · low/no-code · API-first · blockchain · industry-specific · ESG.
  • India: GSTN · e-invoice · e-way bill mandatory.