Defining a Business Add-In in the Enterprise Core

For all Business Add-Ins defined in the Enterprise Core that are to be implemented only by Enterprise Extensions, set the SAP Internal checkbox field.

You do this for the following reason:

At the technical level, Extensions are represented by structure packages, which sit on top of the SAP R/3 Enterprise Core independently of each other, and which do not define dependencies to one another. Each extension is delivered as a single add-on, which is always installed when the SAP R/3 Enterprise Core is installed or upgraded. A switch is needed, since there is no way of interrupting the flow of the process extensions of core processes by means of an extension.

You create a switch by defining an application in the transaction FIBF, where the application code is identical to the code assigned to a structure package.

These switches can be activated or deactivated by the customer in transaction FIBF. (However, we do not advise users to deactivate switches, since inconsistencies may occur if a structure package has been active in the customer’s system for a long time.)

If you set the SAP Internal checkbox for a Business Add-In, it is automatically deactivated unless the switch is set. (That is, Business Add-In implementations that belong to the structure package are not executed.)

Using the function module GET_R3_EXTENSION_SWITCH, whether a switch is activated or deactivated.