Integration Engine and Integration Server 

The Integration Engine is a runtime component of the Exchange Infrastructure that is implemented in the different business systems in different roles. It comprises the following parts:

·        Sender/Receiver Logic: Used to receive and forward XML messages from a communication partner.

·        Integration Logic: Used to refer to the central services of the Integration Engine: Logical routing, technical routing (using end points), mapping, and adapters

The Integration Engine also comprises a third part called the Application Logic. This uses the Exchange Infrastructure to exchange messages in a cross-system business process. The selection of application-specific data or the updating of requests in a business system are included in the application logic, for example.

The integration logic only runs on a SAP Web Application Server Release 6.20 or higher, together with Exchange Infrastructure Add-On 2.0. You must also assign one client in the Integration Engine the role of the central Integration Server:

You do not have to configure client 10 in the Integration Engine as the Integration Server. This is just an example.

In business systems, the Integration Engine is configured in such a way that its task is simply to send and receive messages. The integration logic is executed on the Integration Server.

Sender/receiver logic is only relevant for communication between message interfaces and the Integration Engine, since adapters are used to exchange messages in the case of imported interfaces (see: Architecture).

The Integration Server is not able to execute application logic.