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"
  }
}
'

import Onesignal from '@onesignal/node-onesignal';

const configuration = Onesignal.createConfiguration({
    restApiKey: 'YOUR_REST_API_KEY',
});
const apiInstance = new Onesignal.DefaultApi(configuration);

// string | Your OneSignal App ID in UUID v4 format.
const appId: string = "YOUR_APP_ID";
// string | UUID of the journey to copy.
const journeyId: string = "YOUR_JOURNEY_ID";
// DuplicateJourneyRequest (optional)
const duplicateJourneyRequest: Onesignal.DuplicateJourneyRequest = {
    overrides: {
      name: "Welcome series v2",
    },
  };

try {
  const response = await apiInstance.duplicateJourney(appId, journeyId, duplicateJourneyRequest);
  console.log(response);
} catch (e) {
  if (e instanceof Onesignal.ApiException) {
    // `e.errorMessages` flattens any error-envelope shape to a `string[]`;
    // the raw parsed body remains on `e.body`.
    console.error("duplicateJourney failed: HTTP " + e.code, e.errorMessages);
  } else {
    throw e;
  }
}

import onesignal
from onesignal.api import default_api
from onesignal.models import *
from pprint import pprint

# See configuration.py for a list of all supported configuration parameters.
# Some of the OneSignal endpoints require ORGANIZATION_API_KEY token for authorization, while others require REST_API_KEY.
# We recommend adding both of them in the configuration page so that you will not need to figure it out yourself.
configuration = onesignal.Configuration(
    rest_api_key = "YOUR_REST_API_KEY", # App REST API key required for most endpoints
    organization_api_key = "YOUR_ORGANIZATION_API_KEY" # Organization key is only required for creating new apps and other top-level endpoints
)


# Enter a context with an instance of the API client
with onesignal.ApiClient(configuration) as api_client:
    # Create an instance of the API class
    api_instance = default_api.DefaultApi(api_client)
    app_id = "YOUR_APP_ID" # Your OneSignal App ID in UUID v4 format. 
    journey_id = "YOUR_JOURNEY_ID" # UUID of the journey to copy. 
    duplicate_journey_request = DuplicateJourneyRequest(
        overrides=DuplicateJourneyOverrides(
            name="Welcome series v2",
        ),
    )
    try:
        # Duplicate journey
        api_response = api_instance.duplicate_journey(app_id, journey_id, duplicate_journey_request=duplicate_journey_request)
        pprint(api_response)
    except onesignal.ApiException as e:
        print("Exception when calling DefaultApi->duplicate_journey: %s\n" % e)
        print("Status Code: %s" % e.status)
        print("Response Body: %s" % e.body)

<?php
require_once(__DIR__ . '/vendor/autoload.php');


// Configure Bearer authorization: rest_api_key
$config = onesignal\client\Configuration::getDefaultConfiguration()
                                                ->setRestApiKeyToken('YOUR_REST_API_KEY')
                                                ->setOrganizationApiKeyToken('YOUR_ORGANIZATION_API_KEY');



$apiInstance = new onesignal\client\Api\DefaultApi(
    // If you want use custom http client, pass your client which implements `GuzzleHttp\ClientInterface`.
    // This is optional, `GuzzleHttp\Client` will be used as default.
    new GuzzleHttp\Client(),
    $config
);
$app_id = 'YOUR_APP_ID'; // string | Your OneSignal App ID in UUID v4 format.
$journey_id = 'YOUR_JOURNEY_ID'; // string | UUID of the journey to copy.
$duplicate_journey_request = new \onesignal\client\model\DuplicateJourneyRequest(); // \onesignal\client\model\DuplicateJourneyRequest

try {
    $result = $apiInstance->duplicateJourney($app_id, $journey_id, $duplicate_journey_request);
    print_r($result);
} catch (\onesignal\client\ApiException $e) {
    echo 'Exception when calling DefaultApi->duplicateJourney: ', $e->getMessage(), PHP_EOL;
    echo 'Status Code: ', $e->getCode(), PHP_EOL;
    // getErrorMessages() flattens any error-envelope shape to a string[];
    // the raw body remains on getResponseBody().
    echo 'Error Messages: ', implode(', ', $e->getErrorMessages()), PHP_EOL;
    echo 'Response Body: ', $e->getResponseBody(), PHP_EOL;
} catch (\Exception $e) {
    echo 'Exception when calling DefaultApi->duplicateJourney: ', $e->getMessage(), PHP_EOL;
}

package main

import (
    "context"
    "fmt"
    "os"

    "github.com/OneSignal/onesignal-go-api/v5"
)

func main() {
    appId := "YOUR_APP_ID" // string | Your OneSignal App ID in UUID v4 format.
    journeyId := "YOUR_JOURNEY_ID" // string | UUID of the journey to copy.
    duplicateJourneyRequest := *onesignal.NewDuplicateJourneyRequest() // DuplicateJourneyRequest |  (optional)

    configuration := onesignal.NewConfiguration()
    apiClient := onesignal.NewAPIClient(configuration)

    restAuth := context.WithValue(context.Background(), onesignal.RestApiKey, "YOUR_REST_API_KEY") // App REST API key required for most endpoints

    resp, r, err := apiClient.DefaultApi.DuplicateJourney(restAuth, appId, journeyId).DuplicateJourneyRequest(duplicateJourneyRequest).Execute()

    if err != nil {
        fmt.Fprintf(os.Stderr, "Error when calling `DefaultApi.DuplicateJourney`: %v\n", err)
        fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
        if apiErr, ok := err.(*onesignal.GenericOpenAPIError); ok {
            // ErrorMessages() flattens any error-envelope shape to a []string;
            // the raw body remains on Body().
            fmt.Fprintf(os.Stderr, "Error Messages: %v\n", apiErr.ErrorMessages())
            fmt.Fprintf(os.Stderr, "Response Body: %s\n", apiErr.Body())
        }
    }
    // response from `DuplicateJourney`: Journey
    fmt.Fprintf(os.Stdout, "Response from `DefaultApi.DuplicateJourney`: %v\n", resp)
}

require 'onesignal'
# setup authorization
OneSignal.configure do |config|
  # Configure Bearer authorization: rest_api_key
  config.rest_api_key = 'YOUR_REST_API_KEY'

end

api_instance = OneSignal::DefaultApi.new
app_id = 'YOUR_APP_ID' # String | Your OneSignal App ID in UUID v4 format.
journey_id = 'YOUR_JOURNEY_ID' # String | UUID of the journey to copy.
opts = {
  duplicate_journey_request: OneSignal::DuplicateJourneyRequest.new # DuplicateJourneyRequest | 
}

begin
  # Duplicate journey
  result = api_instance.duplicate_journey(app_id, journey_id, opts)
  p result
rescue OneSignal::ApiError => e
  puts "Error when calling DefaultApi->duplicate_journey: #{e}"
  puts "Status Code: #{e.code}"
  # `e.error_messages` flattens any error-envelope shape to an Array<String>;
  # the raw body remains on `e.response_body`.
  puts "Error Messages: #{e.error_messages}"
  puts "Response Body: #{e.response_body}"
end

// Import classes:
import com.onesignal.client.ApiClient;
import com.onesignal.client.ApiException;
import com.onesignal.client.Configuration;
import com.onesignal.client.auth.*;
import com.onesignal.client.model.*;
import com.onesignal.client.api.DefaultApi;

public class Example {
  public static void main(String[] args) {
    ApiClient defaultClient = Configuration.getDefaultApiClient();
    defaultClient.setBasePath("https://api.onesignal.com");
    
    // Configure HTTP bearer authorization: rest_api_key
    HttpBearerAuth rest_api_key = (HttpBearerAuth) defaultClient.getAuthentication("rest_api_key");
    rest_api_key.setBearerToken("YOUR_REST_API_KEY");

    DefaultApi apiInstance = new DefaultApi(defaultClient);
    String appId = "YOUR_APP_ID"; // String | Your OneSignal App ID in UUID v4 format.
    String journeyId = "YOUR_JOURNEY_ID"; // String | UUID of the journey to copy.
    DuplicateJourneyRequest duplicateJourneyRequest = new DuplicateJourneyRequest(); // DuplicateJourneyRequest | 
    try {
      Journey result = apiInstance.duplicateJourney(appId, journeyId, duplicateJourneyRequest);
      System.out.println(result);
    } catch (ApiException e) {
      System.err.println("Exception when calling DefaultApi#duplicateJourney");
      System.err.println("Status code: " + e.getCode());
      // getErrorMessages() flattens any error-envelope shape to a List<String>;
      // the raw body remains on getResponseBody().
      System.err.println("Error messages: " + e.getErrorMessages());
      System.err.println("Reason: " + e.getResponseBody());
      System.err.println("Response headers: " + e.getResponseHeaders());
      e.printStackTrace();
    }
  }
}

using System;
using System.Collections.Generic;
using System.Diagnostics;
using OneSignalApi.Api;
using OneSignalApi.Client;
using OneSignalApi.Model;

namespace Example
{
    public class DuplicateJourneyExample
    {
        public static void Main()
        {
            Configuration config = new Configuration();
            config.BasePath = "https://api.onesignal.com";
            // Configure Bearer token for authorization: rest_api_key
            config.AccessToken = "YOUR_REST_API_KEY";

            var apiInstance = new DefaultApi(config);
            var appId = "YOUR_APP_ID";  // string | Your OneSignal App ID in UUID v4 format.
            var journeyId = "YOUR_JOURNEY_ID";  // string | UUID of the journey to copy.
            var duplicateJourneyRequest = new DuplicateJourneyRequest(); // DuplicateJourneyRequest |  (optional) 

            try
            {
                // Duplicate journey
                Journey result = apiInstance.DuplicateJourney(appId, journeyId, duplicateJourneyRequest);
                Debug.WriteLine(result);
            }
            catch (ApiException  e)
            {
                Debug.Print("Exception when calling DefaultApi.DuplicateJourney: " + e.Message );
                Debug.Print("Status Code: "+ e.ErrorCode);
                // e.ErrorMessages flattens any error-envelope shape to an IReadOnlyList<string>;
                // the raw body remains on e.ErrorContent.
                Debug.Print("Error Messages: " + string.Join(", ", e.ErrorMessages));
                Debug.Print("Response Body: " + e.ErrorContent);
                Debug.Print(e.StackTrace);
            }
        }
    }
}

use onesignal_rust_api::apis::configuration::Configuration;
use onesignal_rust_api::apis::default_api;

use onesignal_rust_api::models;


#[tokio::main]
async fn main() {
    let mut configuration = Configuration::new();
    configuration.rest_api_key_token = Some("YOUR_REST_API_KEY".to_string());


    // Realistic values are pulled from the spec's `example:` fields where present.
    let app_id: &str = "YOUR_APP_ID";
    let journey_id: &str = "YOUR_JOURNEY_ID";
    let duplicate_journey_request: Option<models::DuplicateJourneyRequest> = None;

    match default_api::duplicate_journey(&configuration, app_id, journey_id, duplicate_journey_request).await {
        Ok(resp) => println!("{:?}", resp),
        Err(e @ onesignal_rust_api::apis::Error::ResponseError(_)) => {
            // `e.error_messages()` flattens any error-envelope shape to a Vec<String>;
            // the raw response remains on the ResponseError variant.
            eprintln!("duplicate_journey failed: {:?}", e.error_messages());
        }
        Err(e) => eprintln!("duplicate_journey failed: {:?}", e),
    }
}

{
  "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": {}
    }
  ]
}

{
  "errors": [
    "API rate limit exceeded."
  ]
}