Assigning the 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. BUS1001 for the material number, for example.
To carry out these functions, choose (BDA4).
Note
Part of the ALE Customizing for outbound processing is partner-independent. It applies to all the message flows relating to one message type.