In order to enhance a program, a Business Add-In must first be defined. Application developers create an interface for the add-in. Enhancement management takes this interface and generates an adapter class for implementing it, thus opening a path for implementations created by partners or customers. Your developer then creates an instance of the adapter class in the application program and calls the corresponding method at the appropriate time.

Customers can find the enhancements present in their system in the IMG and in the component hierarchy. Whenever they want to use a Business Add-In, they must create their own implementation of the add-in. Customers must first implement methods and user interface enhancements, and then activate their implementations of the enhancement. The enhancement's active components are then called at runtime.

Normally, a Business Add-In contains an interface and other additional components such as function codes for menu enhancements. In some cases, Business Add-Ins also include enhancements for screens. The enhancement, interface, and associated classes generated all lie in the appropriate application development namespace. Business Add-In implementations lie in the respective namespaces of the people who created them.

The following sections contain examples of program, menu and screen enhancements.