Difference between the User Exit & Gap analysis

User exits

User exits are standard gate ways provided by SAP to exit the standard code and we can

write our own code with the help of ABAP workbench. its not new functionality which

we are trying to build in sap but its slight enhancement within the same code.

Gap analysis

Gap analysis is start point of Realization and once blue print is finished we have to find

the realization of sap system for client requirment and there will be certain gaps when

compared to system fit. 

Gaps can be closed either by re -engineering of business process to fit with SAP 

we have to use USER exits in case of smal l deviations or complete enhancements with the help of ABAP to fit with the SAP system

ERP and Change Management

ERP calls for a lot of change. The changes can be categorised as follows:

• Business Processes

The business processes are most likely to undergo some changes. These changes could even involve scrapping the process entirely or tasks in the process, if they are considered as a redundant tasks in the ERP environment.

• Organisation Authority, Jobs and Roles

The organisation authority and role definition of an individual also changes. In the new environment, information is available on-line, and access to information makes it easier to take decisions quickly at any levels. This creates new jobs and role definitions and new authority definitions.

• Performance Measures and Rewards System

The new system also calls for a revised set of performance measures and rewards system. This is necessary since ERP causes a change in the job definition and role definition of the organisation employees.

• Technology and IT Infrastructure

ERP involves a change in the existing technology and IT infrastructure. The architecture of ERP system requires an upgradation of the existing hardware and implementing of new technology

Implementation Approaches

The following are the implementation approaches for ERP

• Big Bang Approach

In this approach, ERP is implemented at one-go at all the offices of the organisation.

• Pilot Rollout

In the Pilot rollout approach, one subsidiary business unit (SBU) is selected as the pilot and ERP is first implemented in that unit. Then it is rolled out to other business units in a phased out manner.

• Functional Rollout

In the functional rollout approach, one function like finance or materials management is selected for implementation. Then one by one ERP is implemented for each of the functions in the organisation.

• Cross-Develop Global Prototype

In the cross-develop global prototype, a prototype is first developed and tested. Once successful, the implementation is done for the entire organisation