Comparative Study of Erp Implementation Methodology Case Study: Accelerated Sap Vs Dantes & Hasibuan Methodology

Enterprise Resource Planning (ERP) system is a concept of enterprise system that describe the integration of the whole process in the organization. Study in this field mostly about external development paradigm on information system development. So, issue in ERP is all about how to adopt it in the organization, not about the application development. This paper reviews two methodology on ERP system implementation, one is vendor perspective methodology and new generic perspective methodology. Comparation of both methodology is done in this study by using Roger Sessions' metric. Result is the vendor perspective slightly superior than the new generic perspective methodology.


INTRODUCTION
Enterprise resource planning (ERP) system is an evolved information system technology.Issues on ERP system are related to the external development paradigm.T he main issue on implementing ERP is not (about) developing application to fulfill some certain objectives, but the feasibility to implement the integrated application that cov er the whole organizational business process as one window system.
Many vendors has been researching and developing ERP system based on business best practices.T he most popular vendors are SAP, Peoplesoft, JDEdwards, Oracle, and Baan.Vendor's packages is far to be compared with ERP in house development, or probably, just a few organization did that in their environment .T ime deliverable and supporting service after going live, probably are the main reason why many organization decided to adopt the ERP system as an external development rather than developing in house application .
So then, the main issue on this external development paradigm is not about building the packages, but it refers to adopting it into the organization.Is there any correlation between the adoption methodology and the success of ERP system implementation?
T his paper is discussing ERP implementation methodology or kind of framework on adoption ERP system to the organization.Framework itself can be defined as "A structure for supporting or enclosing something else, especially a skeletal support used as the basis for something being constructed; An external work platform; a scaffold; A fundamental structure, as for a written work; A set of assumptions, concepts, values, and practices that constitut es a way of viewing reality".T he paper contains a review of two different perspectives, one is vendor perspective and the other is generic perspective.We are comparing two ERP implementation methodologies with certain metrics measurements and see how is the different between vendor provided methodology and generic methodology.

ERP IMPLEMENTATION METHODOLOGY
ERP implementation methodology has similar factors with software development life cycle or framework on developing software.However, the main difference is, in the ERP implementation methodology, we do not talk about how to develop ERP system.We are mainly discussing how the way to adopt ERP system with the organization rather than collecting requirements to build the suitable application, main activity when implementing ERP system is matching the organizat ional business process with the ERP system business process.
T his paper review discusses two different perspective of ERP implementation methodology.One is vendor perspective methodology represented by Accelerated SAP [4], another one is generic methodology represented by Multi-factor Enterprise System methodology that published by Dantes & Hasibuan [5].

METHODOLOGY ASSESSMENT
T his paper review used the metrics measurements.Sessions provide 12 criteria with 4 ratings in each criteria.T he ratings are very poor (1), inadequate (2), acceptable (3), and very good (4).Sessions criteria is quite relevant being easy way to choose whether the organization have to adopt complete ERP system, or just having several implemented (from one vendors), or combined packages from more than one vendors as the result from the evaluation.T he 12 criteria used (just) to assess new ERP implementation methodology with existed vendor perspective one by criteria as follows: a.  T he phases of ASAP (can be seen on the figure 1) are divided into 5, here is the explanation of the phases with direct quotation with some additional explanation from [4] and [9]:

DANTES & HASIBUAN METHODOLOGY
Dantes & Hasibuan began their research on ERP by finding key success factors (KSFs) on ERP implementation [2].T hen, they held quantitative experiment by observing some company in Indonesia related to their ERP implementation on their companies [10][11] [12].T he proposed of new methodology begin with publication o f [13] and [14].Basically, this new methodology has not been widely used by the professional, but evaluation procedures can be done due to the complete documentation and characteristics as an ERP implementation methodology.Dantes & Hasibuan methodology focused on 5 aspects that become the subject of ERP implementation system.T he phases that construct the whole methodology are divided into 5: a.

Project Preparation b.
Technology Selection c.

Project Formulation d.
Implementation & Development e.
Post Implementation

HEAD TO HEAD ASAP vs DANTES & HASIBUAN METHODOLOGY
Review on two methodologies above is complete enough to explain the detail of each methodology.T he visualization can be seen in T able I.
for T able III is as follows: process completeness refers to how methodology guides the process through procedures (in this case process on implementing ERP). he conclusion in this comparative study is the ASAP has slightly superior than Dantes & Hasibuan methodology.T here are some aspects of metrics especially, taxonomy, maturity model, and vendor neutrality that ASAP is inferior compared to Dantes & Hasibuan methodology.However, ASAP is evolving and widely used by many organizations in the world.Dantes & Hasibuan methodology has very good theoretical background and research as if it is rated quite good, just slightly inferior than ASAP.More evolving this framework, and more wide its usage, the new generic framework will grow into robust ERP system implementation methodology. T