---
sourceDocument: Australia API Reference
sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/de-DE/api-reference

 Release :

    - australia

ft:locale :

    - de-DE

ft:publication_title :

    - Australia API Reference

ft:clusterId :

    - crapiref

bundleId :

    - crapiref

workflow :

    - Creator


---

# Define an HTTP header

# Define a REST message HTTP header {#ariaid-title1}

* Freigeben Version: Australia
* 
* Aktualisiert 12. März 2026
* 
* ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 Minute Lesedauer

Define an HTTP header for a REST message or HTTP method to send that header with REST
requests.

## Vorbereitungen

Role required: web_service_admin

## Warum und wann dieser Vorgang ausgeführt wird

You can specify an HTTP header for a REST message, or for an HTTP method. Headers defined for a REST message apply to all HTTP methods for that REST message. If you specify the same header for both a REST message and a child HTTP method, the value defined for the HTTP method overrides the value from the parent REST message.

## Prozedur

1. Navigate to AllSystem Web ServicesREST Message.
2. Select a REST message.
3. **Wahlweise:** To specify a header for an HTTP method instead of the REST message, in the HTTP Method related list, select an HTTP method.
4. Select the HTTP Request tab.
5. In the HTTP Headers embedded list, click Insert a new row.
6. Enter the name of the header, such as Content-Type or Accept.  
   Hinweis:  
   * Multipart Content-Type is not supported in RestMessage. You can use [REST step](https://www.servicenow.com/docs/access?context=rest-request-action-designer&version=australia&pubname=australia-integrate-applications&ft:locale=en-US) instead.
   * For other supported headers, it depends on the REST web service provider that you are connecting. Refer to the documentation of your web service provider to identify which headers are valid or required.
   {#t_DefineAnHTTPHeader__ul_zy5_tk2_gfc}
7. Click on the Value field for the new row and enter the value you want to assign this header.  
   You can use a variable in the format ${variable} instead of a static value. You can assign a value to the variable when sending a REST request.
8. Click Update.