ALEAUD not coming to SAP from XI & u0093Acknowledgment not possible" in idx5

Hi All,

I am trying to configure ALEAUD in SAP->XI->JDBC scenario for Idoc acknowledgment.

I did following config in SAP

WE21 create port for XI

WE20 create Partner type XIDLOGSYS1 ‘LS’ , Inbound parameter ALEAUD.

In XI I delete all entries from IDXNOALE table.

But still I am not receiving any ALEAUD in D02 when, any IDOC posted from SAP to XI.

In SXMB_MONI I am able to see Ack status “Acknowledgment not possible”

Please guide how to get ALE AUD in SAP from XI.

Regards