Define an alias for each MarketSite with which you want to communicate.

Define an alias for each trading partner with which you want to communicate directly (that is, without going through any marketplace).

If you are operating as a hub and are using Trading Networks to connect your partners through marketplaces, you can define one or both of two aliases for each partner-an alias for communicating with the marketplace associated with the partner and an alias for communicating with the partner directly.

An alias called default that specifies the URL for a service that receives all envelopes that do not get sent to other aliases. For example, the default alias could point to a service that captures all envelopes for which a destination could not be detected and thus could not be delivered.