SAP ERP has been designed keeping in mind easy customization to break the age old belief that SAP products are hard to change. Netweaver has been a proprietary technology of SAP, in ERP software Netweaver is supported mainly by ABAP which is again a SAP innovation and Java. This provides easy customization of SAP ERP software and allows users to develop new up-gradations and enhancements.
SAP has been the most important application in the ERP arena since it started its services and right now is the biggest software company in the world. At initial stages SAP's ERP solutions were not popular for their flexibility and were considered as too rigid for customization. But with growing demand very soon company paid attention to it and today SAP ERP software are easily customizable solutions and SAP education and training programs are providing skilled and trained workforce to its vendors and users to make optimum use of these facilities.
SAP ERP come with table driven customization programs which can be switched according to the client's needs during configuration of the ERP or its modules. Largely such an easy way in the main software itself, for configuring the software to make it inclined for user's requirements, speaks for its flexibility. Even then if software is unable to fulfill all the requirements of the customer then customization is required.
SAP ERP uses SOA architecture and Netweaver applications can be used to extend ERP by developing custom components in ABAP or Java. Customization of SAP ERP software done is saved in the form of tables which can be used for future references and re-installation. Even customization of SAP ERP software done previously can also be retrieved to get the exact functionality if basic SAP ERP software does not contain one. With latest SAP ERP, vendors get easy way of customizing the ERP according to the user needs and that too in a short duration which has increased the credibility of the solution even further.
Sap customizations can be purchased from the third party too, some applications developed to extend the functionality of any SAP ERP module by other user may be available with a selling party. Such applications are well tested as these are already being used by one or few users. To find such solutions one has to approach a place like SAP Enterprise Service community which has many customized applications developed in Netweaver technology to get integrated with SAP ERP, such places purchase and sell such applications.
Web application server is also wrapped in SAP Netweaver and SAP business warehouse, SAP strategic enterprise management and SAP internet transaction server run under SAP ECC or ERP central component which allows its users to run all the three at one instance and gives more service oriented architecture. Through ABAP programming applications can be written which can communicate with database and with other applications for smooth and well integrated customization. Apart from this every SAP form provides command window which can run a SAP ABAP command in the runtime to further ease the operation of ERP. However customization of SAP ERP is still considered as costly but migration of the changed code is smooth and its track is maintained to save the changes when new version is installed.