curl --request POST \
  --url https://production.trackstarhq.com/wms/returns \
  --header 'Content-Type: application/json' \
  --header 'x-trackstar-access-token: <x-trackstar-access-token>' \
  --header 'x-trackstar-api-key: <x-trackstar-api-key>' \
  --data '
{
  "trackstar_tags": [
    "tag1",
    "tag2",
    {
      "tag3": "value3"
    }
  ],
  "warehouse_id": "warehouse",
  "order_id": "order_id",
  "line_items": [
    {
      "sku": "sku",
      "expected_quantity": 1
    }
  ]
}
'

import requests

url = "https://production.trackstarhq.com/wms/returns"

payload = {
    "trackstar_tags": ["tag1", "tag2", { "tag3": "value3" }],
    "warehouse_id": "warehouse",
    "order_id": "order_id",
    "line_items": [
        {
            "sku": "sku",
            "expected_quantity": 1
        }
    ]
}
headers = {
    "x-trackstar-api-key": "<x-trackstar-api-key>",
    "x-trackstar-access-token": "<x-trackstar-access-token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'x-trackstar-api-key': '<x-trackstar-api-key>',
    'x-trackstar-access-token': '<x-trackstar-access-token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    trackstar_tags: ['tag1', 'tag2', {tag3: 'value3'}],
    warehouse_id: 'warehouse',
    order_id: 'order_id',
    line_items: [{sku: 'sku', expected_quantity: 1}]
  })
};

fetch('https://production.trackstarhq.com/wms/returns', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://production.trackstarhq.com/wms/returns",
  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([
    'trackstar_tags' => [
        'tag1',
        'tag2',
        [
                'tag3' => 'value3'
        ]
    ],
    'warehouse_id' => 'warehouse',
    'order_id' => 'order_id',
    'line_items' => [
        [
                'sku' => 'sku',
                'expected_quantity' => 1
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-trackstar-access-token: <x-trackstar-access-token>",
    "x-trackstar-api-key: <x-trackstar-api-key>"
  ],
]);

$response = curl_exec($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://production.trackstarhq.com/wms/returns"

	payload := strings.NewReader("{\n  \"trackstar_tags\": [\n    \"tag1\",\n    \"tag2\",\n    {\n      \"tag3\": \"value3\"\n    }\n  ],\n  \"warehouse_id\": \"warehouse\",\n  \"order_id\": \"order_id\",\n  \"line_items\": [\n    {\n      \"sku\": \"sku\",\n      \"expected_quantity\": 1\n    }\n  ]\n}")

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

	req.Header.Add("x-trackstar-api-key", "<x-trackstar-api-key>")
	req.Header.Add("x-trackstar-access-token", "<x-trackstar-access-token>")
	req.Header.Add("Content-Type", "application/json")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://production.trackstarhq.com/wms/returns")
  .header("x-trackstar-api-key", "<x-trackstar-api-key>")
  .header("x-trackstar-access-token", "<x-trackstar-access-token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"trackstar_tags\": [\n    \"tag1\",\n    \"tag2\",\n    {\n      \"tag3\": \"value3\"\n    }\n  ],\n  \"warehouse_id\": \"warehouse\",\n  \"order_id\": \"order_id\",\n  \"line_items\": [\n    {\n      \"sku\": \"sku\",\n      \"expected_quantity\": 1\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://production.trackstarhq.com/wms/returns")

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

request = Net::HTTP::Post.new(url)
request["x-trackstar-api-key"] = '<x-trackstar-api-key>'
request["x-trackstar-access-token"] = '<x-trackstar-access-token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"trackstar_tags\": [\n    \"tag1\",\n    \"tag2\",\n    {\n      \"tag3\": \"value3\"\n    }\n  ],\n  \"warehouse_id\": \"warehouse\",\n  \"order_id\": \"order_id\",\n  \"line_items\": [\n    {\n      \"sku\": \"sku\",\n      \"expected_quantity\": 1\n    }\n  ]\n}"

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

{
  "id": "id",
  "unused_fields": [
    "<string>"
  ],
  "data": {
    "id": "return_id",
    "warehouse_customer_id": "warehouse_customer_id",
    "created_date": "2022-01-01T00:00:00Z",
    "updated_date": "2022-01-02T05:05:05Z",
    "status": "open",
    "raw_status": "raw_status",
    "order_id": "order_id",
    "notes": [
      "This is a note"
    ],
    "line_items": [
      {
        "inventory_item_id": "item_id",
        "sku": "sku",
        "expected_quantity": 1,
        "received_quantity": 1,
        "restocked_quantity": 1,
        "return_reason": "Too Small"
      }
    ],
    "shipments": [],
    "external_system_url": "https://example.com/return/123",
    "trackstar_tags": [
      "tag1",
      "tag2",
      {
        "tag3": "value3"
      }
    ],
    "additional_fields": {
      "key": "value"
    },
    "trackstar_created_date": "2023-11-07T05:31:56Z",
    "trackstar_updated_date": "2023-11-07T05:31:56Z"
  }
}

{
  "error": "<string>",
  "detail": {
    "<location>": {
      "<field_name>": [
        "<string>"
      ]
    }
  }
}