Question about BAPI-ALE interface

Hi,

I want to distribute the purchase order data to another system. The business object 'PurchaseOrder' has an ALE message type 'PORDGD'. I am trying to use the related outbound function module and I have some difficulties.

Maybe I don't understand the purpose of the outbound function module OR I don't know how to execute it correctly.

As I understand I have to provide the function module the purchase order and select the segments that I want the IDoc to contain. I also provide the name of the receiver system and to maintain the distribution model.

Does the outbound function module should retrieve the relevant data and create an IDoc ?

Thanks, Nir.