XI triggers an event in SAP

Hi experts,

Does anybody of you know the necessary steps to make the XI trigger an event in SAP R3??

I have a file to file scenario and i would like XI to trigger a function in R3 once the file is delivered in any target folder. I think the best way is using events but not pretty sure.

Aditionally, R3 runs over SunOS and so XI.

Any clues?

Best regards,

David