User-defined message processing nodes

A user-defined message processing node is a node that you can create to complement the supplied built-in node types.

You might consider the use of a user-defined message processing node in the following situations:

Your messages need transformations that the built-in nodes do not provide. For example, you might need a currency converter node.
You want to reuse a subflow.
You want to hide a message flow implementation by packaging it in a user-defined node.

Combine your user-defined nodes with the built-in nodes to create message flows that meet your exact business requirements.