You can configure PowerExchange for SAP NetWeaver to send inbound SAP IDocs to mySAP applications. To send inbound IDocs, PowerExchange for SAP NetWeaver integrates with mySAP applications using Application Link Enabling (ALE). ALE is an SAP proprietary technology that enables data communication between SAP systems. ALE also enables data communication between SAP and external systems.
For example, you have a legacy application that processes sales transactions. You want to synchronize the transactional data in the legacy application with the data in the SAP application database. Use an inbound SAP IDoc mapping to send the transactional data from the legacy application database to the SAP system. The PowerCenter Integration Service extracts the data from the legacy application data source, prepares the data in SAP IDoc format, and sends the data to the SAP system as inbound IDocs using ALE.