curl --request PATCH \
  --url https://api.cf.ovrsea.com/v1/purchaseOrders \
  --header 'Content-Type: application/json' \
  --data '
{
  "product_lines": [
    {
      "ordered_quantity": 24,
      "product": {
        "sku": "REF0123458",
        "hs_code": "96032930",
        "description": "blue shirt with a T shape",
        "is_hazardous": "false",
        "hazardous_description": "UN1993",
        "custom_parameters": [
          {
            "name": "parameter1",
            "value": "value1"
          }
        ]
      },
      "reference": "Delivery #1",
      "unit_price": {
        "amount": 150357.99,
        "currency": "USD"
      },
      "volume": 15,
      "volume_unit": "m3"
    }
  ],
  "reference": "PO5792303"
}
'

import requests

url = "https://api.cf.ovrsea.com/v1/purchaseOrders"

payload = {
    "product_lines": [
        {
            "ordered_quantity": 24,
            "product": {
                "sku": "REF0123458",
                "hs_code": "96032930",
                "description": "blue shirt with a T shape",
                "is_hazardous": "false",
                "hazardous_description": "UN1993",
                "custom_parameters": [
                    {
                        "name": "parameter1",
                        "value": "value1"
                    }
                ]
            },
            "reference": "Delivery #1",
            "unit_price": {
                "amount": 150357.99,
                "currency": "USD"
            },
            "volume": 15,
            "volume_unit": "m3"
        }
    ],
    "reference": "PO5792303"
}
headers = {"Content-Type": "application/json"}

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

print(response.text)

const options = {
  method: 'PATCH',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    product_lines: [
      {
        ordered_quantity: 24,
        product: {
          sku: 'REF0123458',
          hs_code: '96032930',
          description: 'blue shirt with a T shape',
          is_hazardous: 'false',
          hazardous_description: 'UN1993',
          custom_parameters: [{name: 'parameter1', value: 'value1'}]
        },
        reference: 'Delivery #1',
        unit_price: {amount: 150357.99, currency: 'USD'},
        volume: 15,
        volume_unit: 'm3'
      }
    ],
    reference: 'PO5792303'
  })
};

fetch('https://api.cf.ovrsea.com/v1/purchaseOrders', 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://api.cf.ovrsea.com/v1/purchaseOrders",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PATCH",
  CURLOPT_POSTFIELDS => json_encode([
    'product_lines' => [
        [
                'ordered_quantity' => 24,
                'product' => [
                                'sku' => 'REF0123458',
                                'hs_code' => '96032930',
                                'description' => 'blue shirt with a T shape',
                                'is_hazardous' => 'false',
                                'hazardous_description' => 'UN1993',
                                'custom_parameters' => [
                                                                [
                                                                                                                                'name' => 'parameter1',
                                                                                                                                'value' => 'value1'
                                                                ]
                                ]
                ],
                'reference' => 'Delivery #1',
                'unit_price' => [
                                'amount' => 150357.99,
                                'currency' => 'USD'
                ],
                'volume' => 15,
                'volume_unit' => 'm3'
        ]
    ],
    'reference' => 'PO5792303'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($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.cf.ovrsea.com/v1/purchaseOrders"

	payload := strings.NewReader("{\n  \"product_lines\": [\n    {\n      \"ordered_quantity\": 24,\n      \"product\": {\n        \"sku\": \"REF0123458\",\n        \"hs_code\": \"96032930\",\n        \"description\": \"blue shirt with a T shape\",\n        \"is_hazardous\": \"false\",\n        \"hazardous_description\": \"UN1993\",\n        \"custom_parameters\": [\n          {\n            \"name\": \"parameter1\",\n            \"value\": \"value1\"\n          }\n        ]\n      },\n      \"reference\": \"Delivery #1\",\n      \"unit_price\": {\n        \"amount\": 150357.99,\n        \"currency\": \"USD\"\n      },\n      \"volume\": 15,\n      \"volume_unit\": \"m3\"\n    }\n  ],\n  \"reference\": \"PO5792303\"\n}")

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

	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.patch("https://api.cf.ovrsea.com/v1/purchaseOrders")
  .header("Content-Type", "application/json")
  .body("{\n  \"product_lines\": [\n    {\n      \"ordered_quantity\": 24,\n      \"product\": {\n        \"sku\": \"REF0123458\",\n        \"hs_code\": \"96032930\",\n        \"description\": \"blue shirt with a T shape\",\n        \"is_hazardous\": \"false\",\n        \"hazardous_description\": \"UN1993\",\n        \"custom_parameters\": [\n          {\n            \"name\": \"parameter1\",\n            \"value\": \"value1\"\n          }\n        ]\n      },\n      \"reference\": \"Delivery #1\",\n      \"unit_price\": {\n        \"amount\": 150357.99,\n        \"currency\": \"USD\"\n      },\n      \"volume\": 15,\n      \"volume_unit\": \"m3\"\n    }\n  ],\n  \"reference\": \"PO5792303\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.cf.ovrsea.com/v1/purchaseOrders")

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

request = Net::HTTP::Patch.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"product_lines\": [\n    {\n      \"ordered_quantity\": 24,\n      \"product\": {\n        \"sku\": \"REF0123458\",\n        \"hs_code\": \"96032930\",\n        \"description\": \"blue shirt with a T shape\",\n        \"is_hazardous\": \"false\",\n        \"hazardous_description\": \"UN1993\",\n        \"custom_parameters\": [\n          {\n            \"name\": \"parameter1\",\n            \"value\": \"value1\"\n          }\n        ]\n      },\n      \"reference\": \"Delivery #1\",\n      \"unit_price\": {\n        \"amount\": 150357.99,\n        \"currency\": \"USD\"\n      },\n      \"volume\": 15,\n      \"volume_unit\": \"m3\"\n    }\n  ],\n  \"reference\": \"PO5792303\"\n}"

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

{
  "reference": "<string>"
}

{}