Background
You would need to enable the "Inbound IDOC" scenario for PO and ECC integration
Steps
- Set up the RFC destination in PO NWA (Netweaver Administration), and test the connection
- Destination type: RFC
- Create a receiver IDoc_AAE channel in PO ID
- RFC client parameters: Default (Recommended)
- Destination: Destination in step 1
- Set up the inbound partner profile in ECC