## Name

Set Out Header — Sets the value of a header on the outbound message

## Usage

The Set Out Header pattern sets the contents of a message header using an expression. The header is set in the response message.

The Set Out Header pattern can appear after anywhere in the body of a route.

## Properties

Table 77 describes the properties you can specify using the properties editor.

Table 77. Set Out Header Properties

Name | Description
--- | ---
Expression | Specifies the expression used to generate the contents of the header.
language | Specifies the expression language used to process the expression.
Header Name | Specifies the name of the header.
Inherit Error Handler | Specifies whether the node should use the error handler configured for the route. The default is `Disabled`.
Id | Specifies a unique identifier for the endpoint. The Id can be used to refer to the endpoint in the Camel XML file.
Description | Specifies a text description for the node. This description is included in the generated XML file, but it is informational only. It is not used by Apache Camel.

## Related topics

Expression and Predicates Languages
Configuring the route editor