When you activate the connection, you can set attributes or modify attributes that were previously defined. To specify or change the attributes for this connection:
For example, suppose the Community Manager is sending a document packaged as None to a participant. The participant is going to receive the document packaged as AS. It is possible that the Community Manager has more than one Business ID assigned to it. To indicate to WebSphere Partner Gateway which ID to use:
Another example of setting an attributes is to enter a value for the MDN address when you are receiving documents packaged as AS from a participant. The address specifies where the MDN is delivered.
The attributes that you set at the connection level take precedence over any attributes you set at the protocol or document flow level.