
Assigning the Application Object Type for the Outbound Link to the Message Type
The link between the application object and the outbound IDoc is created using the BOR. For this, the BOR object type must be specified for the message type. Example: BUS1001 for the material number.
To carry out these functions choose IDoc
® ALE objects ® Assign to message type. 
Part of the ALE Customizing for outbound processing is partner-independent. It applies to all the message flows relating to one message type.