---
title: Modify Headers
description: Use modify-headers to modify the values of request headers before PingAuthorize sends them to the upstream server or to modify the values of response headers before PingAuthorize returns them to the client.
component: pingauthorize
version: 9.3
page_id: pingauthorize:pingauthorize_policy_administration_guide:paz_modify_headers
canonical_url: https://docs.pingidentity.com/pingauthorize/9.3/pingauthorize_policy_administration_guide/paz_modify_headers.html
revdate: June 30, 2023
---

# Modify Headers

Use `modify-headers` to modify the values of request headers before PingAuthorize sends them to the upstream server or to modify the values of response headers before PingAuthorize returns them to the client.

| Description            | Details                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| ---------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Applicable to          | All, although you cannot apply the Modify Headers statement directly to a SCIM search.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| Additional information | The payload for this statement is a JSON object. The keys are the names of the headers to set, and the values are the new values of the headers.A value can be:- Null, which removes the header

- A string, which sets the header to that value

- An array of strings, which sets the header to all of the string valuesIf the header already exists, PingAuthorize overwrites it.If the header does not exist, PingAuthorize adds it (unless the value is null).If a payload value is an array of strings:- Given a header that supports multiple values, such as `Accept`, PingAuthorize repeats the header for each string in the array.

- Given a header that does not support multiple values, such as `Content-Type`, PingAuthorize sends the last string in the array. |