curl --request POST \
  --url https://api.onesignal.com/apps/{app_id}/journeys/{id}/duplicate \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: <content-type>' \
  --data '
{
  "overrides": {
    "name": "Welcome series v2"
  }
}
'

const options = {
  method: 'POST',
  headers: {Authorization: '<authorization>', 'Content-Type': '<content-type>'},
  body: JSON.stringify({overrides: {name: 'Welcome series v2'}})
};

fetch('https://api.onesignal.com/apps/{app_id}/journeys/{id}/duplicate', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.onesignal.com/apps/{app_id}/journeys/{id}/duplicate"

payload = { "overrides": { "name": "Welcome series v2" } }
headers = {
    "Authorization": "<authorization>",
    "Content-Type": "<content-type>"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.onesignal.com/apps/{app_id}/journeys/{id}/duplicate",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'overrides' => [
        'name' => 'Welcome series v2'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <authorization>",
    "Content-Type: <content-type>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.onesignal.com/apps/{app_id}/journeys/{id}/duplicate"

	payload := strings.NewReader("{\n  \"overrides\": {\n    \"name\": \"Welcome series v2\"\n  }\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "<authorization>")
	req.Header.Add("Content-Type", "<content-type>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

require 'uri'
require 'net/http'

url = URI("https://api.onesignal.com/apps/{app_id}/journeys/{id}/duplicate")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = '<authorization>'
request["Content-Type"] = '<content-type>'
request.body = "{\n  \"overrides\": {\n    \"name\": \"Welcome series v2\"\n  }\n}"

response = http.request(request)
puts response.read_body

HttpResponse<String> response = Unirest.post("https://api.onesignal.com/apps/{app_id}/journeys/{id}/duplicate")
  .header("Authorization", "<authorization>")
  .header("Content-Type", "<content-type>")
  .body("{\n  \"overrides\": {\n    \"name\": \"Welcome series v2\"\n  }\n}")
  .asString();

using RestSharp;


var options = new RestClientOptions("https://api.onesignal.com/apps/{app_id}/journeys/{id}/duplicate");
var client = new RestClient(options);
var request = new RestRequest("");
request.AddHeader("Authorization", "<authorization>");
request.AddJsonBody("{\n  \"overrides\": {\n    \"name\": \"Welcome series v2\"\n  }\n}", false);
var response = await client.PostAsync(request);

Console.WriteLine("{0}", response.Content);

false

{
  "id": "7b6a5948-3726-1504-f3e2-d1c0b9a8f7e6",
  "app_id": "1a2b3c4d-5e6f-7081-92a3-b4c5d6e7f809",
  "name": "Welcome series v2",
  "description": "Onboard new users over their first week.",
  "state": "draft",
  "created_at": "2026-06-02T09:30:00Z",
  "updated_at": "2026-06-02T09:30:00Z",
  "started_at": null,
  "archived_at": null,
  "created_source": "public_api",
  "audience": {
    "kind": "segment",
    "included_segment_ids": [
      "3f7c1e90-0000-0000-0000-000000000001"
    ],
    "excluded_segment_ids": [],
    "future_additions_only": false
  },
  "early_exit": null,
  "reentry_rules": null,
  "schedule": null,
  "nodes": [
    {
      "id": "22222222-0000-0000-0000-000000000001",
      "kind": "send_push",
      "template_id": "9a8b7c6d-0000-0000-0000-000000000001"
    },
    {
      "id": "22222222-0000-0000-0000-000000000002",
      "kind": "wait",
      "duration_seconds": 86400
    },
    {
      "id": "22222222-0000-0000-0000-000000000003",
      "kind": "send_email",
      "template_id": "9a8b7c6d-0000-0000-0000-000000000002"
    }
  ],
  "concurrency_key": "5b1f0c1d9a3e47a2b8c6d0e4f7a913b5c2d8e6f40a7b9c1d3e5f70829a4b6c8d"
}

{
  "errors": [
    {
      "code": "invalid-payload",
      "title": "The property '#/nodes/1' contains additional properties [\"id\"] outside of the schema when none are allowed",
      "meta": {
        "attribute": "base",
        "path": "nodes/1"
      }
    }
  ]
}

{
  "errors": [
    {
      "code": "journey-not-entitled",
      "title": "Journeys are not enabled for this app",
      "meta": {}
    }
  ]
}

{
  "errors": [
    {
      "code": "journey-not-found",
      "title": "Journey not found",
      "meta": {}
    }
  ]
}