OFTP receiver channel not sending the ALEAUD response back to the sender

Hi Experts,

My scenario is ECC(IDOC) ->SAP PI B2B Addon -> OFTP Receiver. SAP PI 7.4 version is in place. PI needs to send the ALEAUD response back to the

ECC system after it receives the IDOC. IDOC sender channel is configured to send the system acknowledgments back to ECC.

Issue is: When I configure the OFTP channel as the receiver, SAP PI is not sending the ALEAUD message back to ECC. I tried configuring a File channel as the Receiver and I see the ALEAUD message is sent back to ECC and the IDOC are in 39 (Green Status). Without the ALEAUD message, the IDOCs in ECC are in 03 status (In Processing).

Please let me know if any additional configuration required in the OFTP channel to send the ALEAUD message back to ECC.

Any assistance in highly appreciated.

Regards,

Vish.