---
title: Decision processing
description: On successful client authorization, the XACML-JSON PDP API invokes the Policy Decision Service with the batch decision requests converted from the XACML-JSON request.
component: pingauthorize
version: 10.1
page_id: pingauthorize:pingauthorize_server_administration_guide:paz_xacml_json_decision_processing
canonical_url: https://docs.pingidentity.com/pingauthorize/10.1/pingauthorize_server_administration_guide/paz_xacml_json_decision_processing.html
revdate: January 26, 2023
---

# Decision processing

On successful client authorization, the XACML-JSON PDP API invokes the Policy Decision Service with the batch decision requests converted from the XACML-JSON request.

When writing policy for the XACML-JSON PDP API endpoint, you should note the mapping between the XACML-JSON schema and the PingAuthorize Server decision request. For more information, see [Requests](paz_xacml_json_decision_requests.html). After the Policy Decision Service determines a decision response, it hands the response back to the XACML-JSON PDP API to provide to the client.