### Reply Action Properties

In a message flow, use the reply action to specify that an immediate reply be sent to the invoker.

The reply action can be used in the request, response or error pipeline. You can configure it to result in a reply with success or failure. In the case of reply with failure where the inbound transport is HTTP, the reply action specifies that an immediate reply is sent to the invoker.

In the Message Flow Editor, click a reply action to display its properties in the Properties view. Use these properties pages to configure the selected reply action. The pages are:

- Assign
- Comment
- Namespaces
- Variables

The Reply page has the following options:

Option | Description
--- | ---
With Success or With Failure | Select With Success to reply that the message was successful, or select With Failure to reply that the message has a fault.

Use the Comment page to add a comment, if desired:

Use the Namespaces page to see a list of defined namespaces or to create a new one.

Use the Variables page to see a list of defined context variables or to create a new one. For more information about context variables, see Message Context in the AquaLogic Service Bus User Guide.