Communication Channel for Auto ID

Hi,

Has somebody ever created a communication channel between SAP XI and SAP AII in XI Directory???

If so, how did you do it?? I'm wasting all my ideas on it, I proved with XI 3.0 Adapter with path /sap/xi/engine?type=entry and port 8000 but I get error 'INTERFACE_REGISTRATION_ERROR'...

Thanks in advance!!!