Automatic triggering of Xi...

Hi...

My requirement is to trigger an XI interface as soon as Good reciepts (GRC- MIGO) is done in SAP and the XI has to create a file at the reciever side. I want to know what should be the data flow for this scenario.

Also, let me know if there is any standard idoc available for GRC (Tx -MIGO).

Provide me with any links...documents...

Thanks..