Before you begin
These instructions assume you are already editing a message flow in the Edit Message Flow page, as explained in Creating, Editing, and Viewing Message Flows.
To add a proxy service Error Handler
An error handler is a pipeline and is therefore configured like any other pipeline. For example, you can use the Publish action to send error notifications to other services, use the Assign action to modify the context variables, and so on. See Adding and Editing Actions in Message Flows. There is no restriction on what actions may be chained together.
Three commonly-used error actions are Raise Error, Reply, and Resume.
After you finish
On the Edit Message Flow page, continue to construct the message flow, as described in Creating, Editing, and Viewing Message Flows.