diff --git a/x-pack/plugins/actions/docs/openapi/components/schemas/run_pushtoservice.yaml b/x-pack/plugins/actions/docs/openapi/components/schemas/run_pushtoservice.yaml
index 210bf1dcf8570..0d5e2bd6a6d51 100644
--- a/x-pack/plugins/actions/docs/openapi/components/schemas/run_pushtoservice.yaml
+++ b/x-pack/plugins/actions/docs/openapi/components/schemas/run_pushtoservice.yaml
@@ -30,6 +30,13 @@ properties:
         type: object
         description: Information necessary to create or update a Jira, ServiceNow ITSM, ServiveNow SecOps, Swimlane, or TheHive incident.
         properties:
+          additional_fields:
+            type: string
+            nullable: true
+            maxLength: 20
+            description: >
+              Additional fields for ServiceNow ITSM and ServiveNow SecOps connectors.
+              The fields must exist in the Elastic ServiceNow application and must be specified in JSON format.
           alertId:
             type: string
             description: The alert identifier for Swimlane connectors.