## Name

Set Header — Sets the value of a message header

## Usage

The Set Header pattern sets the contents of a message header using an expression.

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

## Properties

Table 76 describes the properties you can specify using the properties editor.

Table 76. Set Header Properties

Name | Description
--- | ---
Header Name | Specifies the name of the header.
Expression | Specifies the expression used to generate the contents of the header.
language | Specifies the expression language used to process the expression.
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