Prerequisites 
In addition to the various tools and engines required to run 
SAP NetWeaver usage
type PI, the following tools and engines must be installed
and configured to run an application-to-application (A2A) scenario.
Additional tools and engines required for A2A integration:
Prerequisite |
Access |
See |
Third-party adapters |
Any required adapter that is not provided by SAP, but that can be run with the Adapter Engine (J2EE) |
SAP Service Marketplace at service.sap.com/netweaver ® SAP NetWeaver in Detail ® Process Integration ® SAP Exchange Infrastructure ® SAP XI in Detail ® Connectivity. |
Plain J2SE Adapter Engine |
http://<j2se adapter engine host>:<j2se adapter engine port> |
The Plain J2SE Adapter Engine is only supported for compatibility reasons. It hosts only a subset of the adapter functionality and you should only use it if it is a precondition in your environment. |