Use sender in Payload: Sender not in Payload.
When R3 sends ORDRSP to XI , the BPM in XI sends a Status ( SYSTAT01 IDoc ) back to R3 without any problem. Whereas when R3 sends DELVRY03 to XI, the BPM in XI is not able to send the Status back to R3 and gets stuck in XI Queue. The reason: Use sender in Payload: Sender not in Payload.
Both ORDRSP and DELVRY03 are using the same IDOC Receiver Channel with Take Sender from Payload checked.
Any idea what is causing the message to get stuck in the queue.