presentation_1 erp implementation choices

SUMMER 2005JUNE 6-10 2005

ERP Implementation Choices

ERP Implementation MethodologiesSAP Implementation Methodology (ASAP)

Strategic Implementation Decisions

IST 600 ERP Systems: Key Implementation Issues U. Yeliz Eseryel

ERP Implementation Phases Can be used for any ERP implementation Based on Project Management Methodology

Project Initiation Planning Controlling Execution Closeout


ERP Implementation Phases According to Ross:

Design Implementation Stabilization Continuous Improvement Transformation

Markus and Tanis: Chartering Project Shakedown Onward and Upward


SAP Implementation Timeline Accelerated SAP (ASAP) Implementation Methodology


What is ASAP Methodology?


Project Success With ASAP Meth.


Phase-1 Project Preparation


Phase- 2 Business Blueprint


Phase-3 Realization


Project Plan Outline for Realization


Phase-4 Final Preparation


Phase-5 Go Live & Support


Strategic ERP Implementation Choices

Timeline Big Bang Implementation Phased (Roll Out) Implementation Mini Big Bang (Combination of big bang and roll-out)

Staff/Resources Outsourcing In-house

Customization Level

Pro’s and Con’s?




Customization in ERP Environment

Technical Customization

Process Customization


ERP Technical Customization Davenport:

Module Selection Table Configuration Code Modification

Brehm, et.al. : Configuration Bolt-on’s Screen masks

(eg: 3 screens into 1) Extended Reporting Workflow Programming User Exits ERP Programming

(eg: ABAP/4) Interface Development Package Code Modification


Module Selection Implement one or more modules Default configuration of the vendor May be appropriate for small companies Rarely sufficient for many companies


Configuration Configuration: Changing parameters in tables in

SAP R/3 SAP promises that configuration specifications

will transfer without problems to later versions of their software

SAP calls configuration customization


Configuration in SAP R/3: SPRO


The Implementation Guide (IMG)


Defining Companies


Code Modification (Customization) Customization: Changing code in SAP R/3. Today such changes are done in a

programming language developed by SAP called ABAP/4. (In future it will also be possible in J2EE.)

May involve defining new database tables It is possible to make changes to the code that

SAP will not support. Future upgrades will need to be re-customized

(expensive).


Process Customization Process Customization: The degree to which

the business process is changed to fit the system.

Business process: Tasks Resources Outcome Relationships among tasks Relationships among resources and tasks


Process Customization Categories No change

Change in tasks and resources No changes in relationships among task and configuration of

resources Eg: Task automation

Incremental change Improvements in tasks and resources Improvements in relationships among tasks Improvements in relationships among tasks and resources. Nature of process and outcome measures unchanged Eg: Total Quality Management (TQM)


Process Customization Categories Radical Change

Fundamental rethinking and radical redesign of elements in a business process including measures of performance

Eg: Business Process Reengineering Eg: Move from functional view of organizations to

process view of orgs.


ERP Customization Choices


Questions?


Sources

Kenny Leung- SAP Summit 2005 Hong Kong Luo, W., & Strong, D. M. (2004). A framework

for evaluating erp implementation choices. IEEE Transactions on Engineering Management, 51(3), 322-333.

Brehm, Heinzl, and Markus, “Tailoring ERP Systems: A Spectrum of Choices”, 2000


Some Terminology Basis Software. The R/3 Basis is similar to an operating

system that specifically has the capability of processing any of the SAP R/3 transactions. It’s a middleware between the operating system and the servers that allow for smooth operations across different servers, operating systems, and databases.

ABAP: Advanced Business Application Programming (ABAP/4), is a special‑purpose, fourth generation language developed by SAP, is used to write programs for the specialized requirements of creating custom reports, screens, user‑defined functions, and special industry solutions for use with the SAP R/3 System.


What is SAP Netweaver? A comprehensive integration and application platform,

SAP NetWeaver works with your existing IT infrastructure to enable and manage change.

SAP NetWeaver embraces Internet standards such as HTTP, XML, and Web services. Ensuring openness and interoperability with Microsoft .NET

and Java 2 Platform Enterprise Edition (J2EE) environments such as IBM WebSphere.

presentation_1 erp implementation choices

Documents

asap methodology

sap r3sap

business process

erp implementationbased

configuration of resourceseg

project preparationphase

modulesdefault configuration

configuration specifications