ALEAUD (or) Idoc Ack in PO 7.31 (Java Only Stack) System

Hello Experts,

Need your help here.

We are working on PO 7.31 Java Only Stack.

We have an Idoc to Idoc scenario where in which we need an ALEAUD ACK back from the Target SAP system and send the same to Source SAP system..

Checked the Ack settings in the sender Idoc channel but getting nothing back from the Target system even though the ALEAUD Idoc is being generated from Target system.

Do we require additional communication channels and additional mappings(if any) for this.

Can you please let me know what are all the changes that needs to be done in order to send the ALEAUD Idoc to Sender SAP system.

Thanks,

Prajwal