ALE / IDOC setup

I did ALE setup to Send Idoc from R/3 to XI. I generated Idoc and sent to XI. Idoc status on R/3 is 03 - Idoc sent to R/3 System or external program ).

In XI I did setup Port for R/3 system using IDX1.

However the Idoc sent from R/3 to XI did not reached XI. What could be a problem ?. Would someone guide me please.

I did everything one possibly do using step by step guide.

When I do consistency check using BDM5, all messages are green and one in RED with folowing message

Checks in Partner System XXXXXXXXX

Test function in partner system : connection closed