curl --request POST \
  --url https://{server_name}/Order/UpdateOrderProducts \
  --header 'Content-Type: application/json' \
  --data '
{
  "MetaDataUpdateType": "<string>",
  "OrderId": "<string>",
  "Products": [
    {
      "Attributes": [
        {
          "AttributeCode": "<string>",
          "AttributeTypeCode": "<string>",
          "Name": "<string>"
        }
      ],
      "AttributesEnglish": [
        {
          "AttributeCode": "<string>",
          "AttributeTypeCode": "<string>",
          "Name": "<string>"
        }
      ],
      "BackOrderDate": "<string>",
      "Brand": {
        "BrandCode": "<string>",
        "Name": "<string>"
      },
      "CartItemId": "<string>",
      "CartItemOptionId": "<string>",
      "Categories": [
        {
          "CategoryCode": "<string>",
          "Name": "<string>"
        }
      ],
      "DeliveryQuantity": 123,
      "Description": "<string>",
      "DescriptionEnglish": "<string>",
      "GenericHSCode": "<string>",
      "GiftMessage": "<string>",
      "HandlingCode": "<string>",
      "Height": 123,
      "HubCode": "<string>",
      "ImageHeight": 123,
      "ImageURL": "<string>",
      "ImageWidth": 123,
      "IsBackOrdered": true,
      "IsBlockedForGlobalE": true,
      "IsBundle": true,
      "IsFixedPrice": true,
      "IsVirtual": true,
      "Keywords": "<string>",
      "Length": 123,
      "LineItemOriginalSalePrice": 123,
      "LineItemSalePrice": 123,
      "ListPrice": 123,
      "LocalVATRateType": {
        "Name": "<string>",
        "Rate": 123,
        "VATRateTypeCode": "<string>"
      },
      "MetaData": {
        "Attributes": [
          {
            "AttributeCode": "<string>",
            "AttributeTypeCode": "<string>",
            "Name": "<string>"
          }
        ]
      },
      "Name": "<string>",
      "NameEnglish": "<string>",
      "NetVolume": 123,
      "NetWeight": 123,
      "OrderedQuantity": 123,
      "OriginalListPrice": 123,
      "OriginalSalePrice": 123,
      "OriginCountryCode": "<string>",
      "ParentCartItemId": "<string>",
      "PriceCoefficientRate": 123,
      "ProductClassCode": "<string>",
      "ProductCode": "<string>",
      "ProductCodeSecondary": "<string>",
      "ProductGroupCode": "<string>",
      "ProductGroupCodeSecondary": "<string>",
      "SalePrice": 123,
      "SalePriceBeforeRounding": 123,
      "SalePriceReason": "<string>",
      "URL": "<string>",
      "VATCategory": {
        "Name": "<string>",
        "VATCategoryCode": "<string>"
      },
      "VATRateType": {
        "Name": "<string>",
        "Rate": 123,
        "VATRateTypeCode": "<string>"
      },
      "Volume": 123,
      "Weight": 123,
      "Width": 123
    }
  ]
}
'

import requests

url = "https://{server_name}/Order/UpdateOrderProducts"

payload = {
    "MetaDataUpdateType": "<string>",
    "OrderId": "<string>",
    "Products": [
        {
            "Attributes": [
                {
                    "AttributeCode": "<string>",
                    "AttributeTypeCode": "<string>",
                    "Name": "<string>"
                }
            ],
            "AttributesEnglish": [
                {
                    "AttributeCode": "<string>",
                    "AttributeTypeCode": "<string>",
                    "Name": "<string>"
                }
            ],
            "BackOrderDate": "<string>",
            "Brand": {
                "BrandCode": "<string>",
                "Name": "<string>"
            },
            "CartItemId": "<string>",
            "CartItemOptionId": "<string>",
            "Categories": [
                {
                    "CategoryCode": "<string>",
                    "Name": "<string>"
                }
            ],
            "DeliveryQuantity": 123,
            "Description": "<string>",
            "DescriptionEnglish": "<string>",
            "GenericHSCode": "<string>",
            "GiftMessage": "<string>",
            "HandlingCode": "<string>",
            "Height": 123,
            "HubCode": "<string>",
            "ImageHeight": 123,
            "ImageURL": "<string>",
            "ImageWidth": 123,
            "IsBackOrdered": True,
            "IsBlockedForGlobalE": True,
            "IsBundle": True,
            "IsFixedPrice": True,
            "IsVirtual": True,
            "Keywords": "<string>",
            "Length": 123,
            "LineItemOriginalSalePrice": 123,
            "LineItemSalePrice": 123,
            "ListPrice": 123,
            "LocalVATRateType": {
                "Name": "<string>",
                "Rate": 123,
                "VATRateTypeCode": "<string>"
            },
            "MetaData": { "Attributes": [
                    {
                        "AttributeCode": "<string>",
                        "AttributeTypeCode": "<string>",
                        "Name": "<string>"
                    }
                ] },
            "Name": "<string>",
            "NameEnglish": "<string>",
            "NetVolume": 123,
            "NetWeight": 123,
            "OrderedQuantity": 123,
            "OriginalListPrice": 123,
            "OriginalSalePrice": 123,
            "OriginCountryCode": "<string>",
            "ParentCartItemId": "<string>",
            "PriceCoefficientRate": 123,
            "ProductClassCode": "<string>",
            "ProductCode": "<string>",
            "ProductCodeSecondary": "<string>",
            "ProductGroupCode": "<string>",
            "ProductGroupCodeSecondary": "<string>",
            "SalePrice": 123,
            "SalePriceBeforeRounding": 123,
            "SalePriceReason": "<string>",
            "URL": "<string>",
            "VATCategory": {
                "Name": "<string>",
                "VATCategoryCode": "<string>"
            },
            "VATRateType": {
                "Name": "<string>",
                "Rate": 123,
                "VATRateTypeCode": "<string>"
            },
            "Volume": 123,
            "Weight": 123,
            "Width": 123
        }
    ]
}
headers = {"Content-Type": "application/json"}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    MetaDataUpdateType: '<string>',
    OrderId: '<string>',
    Products: [
      {
        Attributes: [{AttributeCode: '<string>', AttributeTypeCode: '<string>', Name: '<string>'}],
        AttributesEnglish: [{AttributeCode: '<string>', AttributeTypeCode: '<string>', Name: '<string>'}],
        BackOrderDate: '<string>',
        Brand: {BrandCode: '<string>', Name: '<string>'},
        CartItemId: '<string>',
        CartItemOptionId: '<string>',
        Categories: [{CategoryCode: '<string>', Name: '<string>'}],
        DeliveryQuantity: 123,
        Description: '<string>',
        DescriptionEnglish: '<string>',
        GenericHSCode: '<string>',
        GiftMessage: '<string>',
        HandlingCode: '<string>',
        Height: 123,
        HubCode: '<string>',
        ImageHeight: 123,
        ImageURL: '<string>',
        ImageWidth: 123,
        IsBackOrdered: true,
        IsBlockedForGlobalE: true,
        IsBundle: true,
        IsFixedPrice: true,
        IsVirtual: true,
        Keywords: '<string>',
        Length: 123,
        LineItemOriginalSalePrice: 123,
        LineItemSalePrice: 123,
        ListPrice: 123,
        LocalVATRateType: {Name: '<string>', Rate: 123, VATRateTypeCode: '<string>'},
        MetaData: {
          Attributes: [{AttributeCode: '<string>', AttributeTypeCode: '<string>', Name: '<string>'}]
        },
        Name: '<string>',
        NameEnglish: '<string>',
        NetVolume: 123,
        NetWeight: 123,
        OrderedQuantity: 123,
        OriginalListPrice: 123,
        OriginalSalePrice: 123,
        OriginCountryCode: '<string>',
        ParentCartItemId: '<string>',
        PriceCoefficientRate: 123,
        ProductClassCode: '<string>',
        ProductCode: '<string>',
        ProductCodeSecondary: '<string>',
        ProductGroupCode: '<string>',
        ProductGroupCodeSecondary: '<string>',
        SalePrice: 123,
        SalePriceBeforeRounding: 123,
        SalePriceReason: '<string>',
        URL: '<string>',
        VATCategory: {Name: '<string>', VATCategoryCode: '<string>'},
        VATRateType: {Name: '<string>', Rate: 123, VATRateTypeCode: '<string>'},
        Volume: 123,
        Weight: 123,
        Width: 123
      }
    ]
  })
};

fetch('https://{server_name}/Order/UpdateOrderProducts', 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://{server_name}/Order/UpdateOrderProducts",
  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([
    'MetaDataUpdateType' => '<string>',
    'OrderId' => '<string>',
    'Products' => [
        [
                'Attributes' => [
                                [
                                                                'AttributeCode' => '<string>',
                                                                'AttributeTypeCode' => '<string>',
                                                                'Name' => '<string>'
                                ]
                ],
                'AttributesEnglish' => [
                                [
                                                                'AttributeCode' => '<string>',
                                                                'AttributeTypeCode' => '<string>',
                                                                'Name' => '<string>'
                                ]
                ],
                'BackOrderDate' => '<string>',
                'Brand' => [
                                'BrandCode' => '<string>',
                                'Name' => '<string>'
                ],
                'CartItemId' => '<string>',
                'CartItemOptionId' => '<string>',
                'Categories' => [
                                [
                                                                'CategoryCode' => '<string>',
                                                                'Name' => '<string>'
                                ]
                ],
                'DeliveryQuantity' => 123,
                'Description' => '<string>',
                'DescriptionEnglish' => '<string>',
                'GenericHSCode' => '<string>',
                'GiftMessage' => '<string>',
                'HandlingCode' => '<string>',
                'Height' => 123,
                'HubCode' => '<string>',
                'ImageHeight' => 123,
                'ImageURL' => '<string>',
                'ImageWidth' => 123,
                'IsBackOrdered' => true,
                'IsBlockedForGlobalE' => true,
                'IsBundle' => true,
                'IsFixedPrice' => true,
                'IsVirtual' => true,
                'Keywords' => '<string>',
                'Length' => 123,
                'LineItemOriginalSalePrice' => 123,
                'LineItemSalePrice' => 123,
                'ListPrice' => 123,
                'LocalVATRateType' => [
                                'Name' => '<string>',
                                'Rate' => 123,
                                'VATRateTypeCode' => '<string>'
                ],
                'MetaData' => [
                                'Attributes' => [
                                                                [
                                                                                                                                'AttributeCode' => '<string>',
                                                                                                                                'AttributeTypeCode' => '<string>',
                                                                                                                                'Name' => '<string>'
                                                                ]
                                ]
                ],
                'Name' => '<string>',
                'NameEnglish' => '<string>',
                'NetVolume' => 123,
                'NetWeight' => 123,
                'OrderedQuantity' => 123,
                'OriginalListPrice' => 123,
                'OriginalSalePrice' => 123,
                'OriginCountryCode' => '<string>',
                'ParentCartItemId' => '<string>',
                'PriceCoefficientRate' => 123,
                'ProductClassCode' => '<string>',
                'ProductCode' => '<string>',
                'ProductCodeSecondary' => '<string>',
                'ProductGroupCode' => '<string>',
                'ProductGroupCodeSecondary' => '<string>',
                'SalePrice' => 123,
                'SalePriceBeforeRounding' => 123,
                'SalePriceReason' => '<string>',
                'URL' => '<string>',
                'VATCategory' => [
                                'Name' => '<string>',
                                'VATCategoryCode' => '<string>'
                ],
                'VATRateType' => [
                                'Name' => '<string>',
                                'Rate' => 123,
                                'VATRateTypeCode' => '<string>'
                ],
                'Volume' => 123,
                'Weight' => 123,
                'Width' => 123
        ]
    ]
  ]),
  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://{server_name}/Order/UpdateOrderProducts"

	payload := strings.NewReader("{\n  \"MetaDataUpdateType\": \"<string>\",\n  \"OrderId\": \"<string>\",\n  \"Products\": [\n    {\n      \"Attributes\": [\n        {\n          \"AttributeCode\": \"<string>\",\n          \"AttributeTypeCode\": \"<string>\",\n          \"Name\": \"<string>\"\n        }\n      ],\n      \"AttributesEnglish\": [\n        {\n          \"AttributeCode\": \"<string>\",\n          \"AttributeTypeCode\": \"<string>\",\n          \"Name\": \"<string>\"\n        }\n      ],\n      \"BackOrderDate\": \"<string>\",\n      \"Brand\": {\n        \"BrandCode\": \"<string>\",\n        \"Name\": \"<string>\"\n      },\n      \"CartItemId\": \"<string>\",\n      \"CartItemOptionId\": \"<string>\",\n      \"Categories\": [\n        {\n          \"CategoryCode\": \"<string>\",\n          \"Name\": \"<string>\"\n        }\n      ],\n      \"DeliveryQuantity\": 123,\n      \"Description\": \"<string>\",\n      \"DescriptionEnglish\": \"<string>\",\n      \"GenericHSCode\": \"<string>\",\n      \"GiftMessage\": \"<string>\",\n      \"HandlingCode\": \"<string>\",\n      \"Height\": 123,\n      \"HubCode\": \"<string>\",\n      \"ImageHeight\": 123,\n      \"ImageURL\": \"<string>\",\n      \"ImageWidth\": 123,\n      \"IsBackOrdered\": true,\n      \"IsBlockedForGlobalE\": true,\n      \"IsBundle\": true,\n      \"IsFixedPrice\": true,\n      \"IsVirtual\": true,\n      \"Keywords\": \"<string>\",\n      \"Length\": 123,\n      \"LineItemOriginalSalePrice\": 123,\n      \"LineItemSalePrice\": 123,\n      \"ListPrice\": 123,\n      \"LocalVATRateType\": {\n        \"Name\": \"<string>\",\n        \"Rate\": 123,\n        \"VATRateTypeCode\": \"<string>\"\n      },\n      \"MetaData\": {\n        \"Attributes\": [\n          {\n            \"AttributeCode\": \"<string>\",\n            \"AttributeTypeCode\": \"<string>\",\n            \"Name\": \"<string>\"\n          }\n        ]\n      },\n      \"Name\": \"<string>\",\n      \"NameEnglish\": \"<string>\",\n      \"NetVolume\": 123,\n      \"NetWeight\": 123,\n      \"OrderedQuantity\": 123,\n      \"OriginalListPrice\": 123,\n      \"OriginalSalePrice\": 123,\n      \"OriginCountryCode\": \"<string>\",\n      \"ParentCartItemId\": \"<string>\",\n      \"PriceCoefficientRate\": 123,\n      \"ProductClassCode\": \"<string>\",\n      \"ProductCode\": \"<string>\",\n      \"ProductCodeSecondary\": \"<string>\",\n      \"ProductGroupCode\": \"<string>\",\n      \"ProductGroupCodeSecondary\": \"<string>\",\n      \"SalePrice\": 123,\n      \"SalePriceBeforeRounding\": 123,\n      \"SalePriceReason\": \"<string>\",\n      \"URL\": \"<string>\",\n      \"VATCategory\": {\n        \"Name\": \"<string>\",\n        \"VATCategoryCode\": \"<string>\"\n      },\n      \"VATRateType\": {\n        \"Name\": \"<string>\",\n        \"Rate\": 123,\n        \"VATRateTypeCode\": \"<string>\"\n      },\n      \"Volume\": 123,\n      \"Weight\": 123,\n      \"Width\": 123\n    }\n  ]\n}")

	req, _ := http.NewRequest("POST", 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.post("https://{server_name}/Order/UpdateOrderProducts")
  .header("Content-Type", "application/json")
  .body("{\n  \"MetaDataUpdateType\": \"<string>\",\n  \"OrderId\": \"<string>\",\n  \"Products\": [\n    {\n      \"Attributes\": [\n        {\n          \"AttributeCode\": \"<string>\",\n          \"AttributeTypeCode\": \"<string>\",\n          \"Name\": \"<string>\"\n        }\n      ],\n      \"AttributesEnglish\": [\n        {\n          \"AttributeCode\": \"<string>\",\n          \"AttributeTypeCode\": \"<string>\",\n          \"Name\": \"<string>\"\n        }\n      ],\n      \"BackOrderDate\": \"<string>\",\n      \"Brand\": {\n        \"BrandCode\": \"<string>\",\n        \"Name\": \"<string>\"\n      },\n      \"CartItemId\": \"<string>\",\n      \"CartItemOptionId\": \"<string>\",\n      \"Categories\": [\n        {\n          \"CategoryCode\": \"<string>\",\n          \"Name\": \"<string>\"\n        }\n      ],\n      \"DeliveryQuantity\": 123,\n      \"Description\": \"<string>\",\n      \"DescriptionEnglish\": \"<string>\",\n      \"GenericHSCode\": \"<string>\",\n      \"GiftMessage\": \"<string>\",\n      \"HandlingCode\": \"<string>\",\n      \"Height\": 123,\n      \"HubCode\": \"<string>\",\n      \"ImageHeight\": 123,\n      \"ImageURL\": \"<string>\",\n      \"ImageWidth\": 123,\n      \"IsBackOrdered\": true,\n      \"IsBlockedForGlobalE\": true,\n      \"IsBundle\": true,\n      \"IsFixedPrice\": true,\n      \"IsVirtual\": true,\n      \"Keywords\": \"<string>\",\n      \"Length\": 123,\n      \"LineItemOriginalSalePrice\": 123,\n      \"LineItemSalePrice\": 123,\n      \"ListPrice\": 123,\n      \"LocalVATRateType\": {\n        \"Name\": \"<string>\",\n        \"Rate\": 123,\n        \"VATRateTypeCode\": \"<string>\"\n      },\n      \"MetaData\": {\n        \"Attributes\": [\n          {\n            \"AttributeCode\": \"<string>\",\n            \"AttributeTypeCode\": \"<string>\",\n            \"Name\": \"<string>\"\n          }\n        ]\n      },\n      \"Name\": \"<string>\",\n      \"NameEnglish\": \"<string>\",\n      \"NetVolume\": 123,\n      \"NetWeight\": 123,\n      \"OrderedQuantity\": 123,\n      \"OriginalListPrice\": 123,\n      \"OriginalSalePrice\": 123,\n      \"OriginCountryCode\": \"<string>\",\n      \"ParentCartItemId\": \"<string>\",\n      \"PriceCoefficientRate\": 123,\n      \"ProductClassCode\": \"<string>\",\n      \"ProductCode\": \"<string>\",\n      \"ProductCodeSecondary\": \"<string>\",\n      \"ProductGroupCode\": \"<string>\",\n      \"ProductGroupCodeSecondary\": \"<string>\",\n      \"SalePrice\": 123,\n      \"SalePriceBeforeRounding\": 123,\n      \"SalePriceReason\": \"<string>\",\n      \"URL\": \"<string>\",\n      \"VATCategory\": {\n        \"Name\": \"<string>\",\n        \"VATCategoryCode\": \"<string>\"\n      },\n      \"VATRateType\": {\n        \"Name\": \"<string>\",\n        \"Rate\": 123,\n        \"VATRateTypeCode\": \"<string>\"\n      },\n      \"Volume\": 123,\n      \"Weight\": 123,\n      \"Width\": 123\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://{server_name}/Order/UpdateOrderProducts")

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

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"MetaDataUpdateType\": \"<string>\",\n  \"OrderId\": \"<string>\",\n  \"Products\": [\n    {\n      \"Attributes\": [\n        {\n          \"AttributeCode\": \"<string>\",\n          \"AttributeTypeCode\": \"<string>\",\n          \"Name\": \"<string>\"\n        }\n      ],\n      \"AttributesEnglish\": [\n        {\n          \"AttributeCode\": \"<string>\",\n          \"AttributeTypeCode\": \"<string>\",\n          \"Name\": \"<string>\"\n        }\n      ],\n      \"BackOrderDate\": \"<string>\",\n      \"Brand\": {\n        \"BrandCode\": \"<string>\",\n        \"Name\": \"<string>\"\n      },\n      \"CartItemId\": \"<string>\",\n      \"CartItemOptionId\": \"<string>\",\n      \"Categories\": [\n        {\n          \"CategoryCode\": \"<string>\",\n          \"Name\": \"<string>\"\n        }\n      ],\n      \"DeliveryQuantity\": 123,\n      \"Description\": \"<string>\",\n      \"DescriptionEnglish\": \"<string>\",\n      \"GenericHSCode\": \"<string>\",\n      \"GiftMessage\": \"<string>\",\n      \"HandlingCode\": \"<string>\",\n      \"Height\": 123,\n      \"HubCode\": \"<string>\",\n      \"ImageHeight\": 123,\n      \"ImageURL\": \"<string>\",\n      \"ImageWidth\": 123,\n      \"IsBackOrdered\": true,\n      \"IsBlockedForGlobalE\": true,\n      \"IsBundle\": true,\n      \"IsFixedPrice\": true,\n      \"IsVirtual\": true,\n      \"Keywords\": \"<string>\",\n      \"Length\": 123,\n      \"LineItemOriginalSalePrice\": 123,\n      \"LineItemSalePrice\": 123,\n      \"ListPrice\": 123,\n      \"LocalVATRateType\": {\n        \"Name\": \"<string>\",\n        \"Rate\": 123,\n        \"VATRateTypeCode\": \"<string>\"\n      },\n      \"MetaData\": {\n        \"Attributes\": [\n          {\n            \"AttributeCode\": \"<string>\",\n            \"AttributeTypeCode\": \"<string>\",\n            \"Name\": \"<string>\"\n          }\n        ]\n      },\n      \"Name\": \"<string>\",\n      \"NameEnglish\": \"<string>\",\n      \"NetVolume\": 123,\n      \"NetWeight\": 123,\n      \"OrderedQuantity\": 123,\n      \"OriginalListPrice\": 123,\n      \"OriginalSalePrice\": 123,\n      \"OriginCountryCode\": \"<string>\",\n      \"ParentCartItemId\": \"<string>\",\n      \"PriceCoefficientRate\": 123,\n      \"ProductClassCode\": \"<string>\",\n      \"ProductCode\": \"<string>\",\n      \"ProductCodeSecondary\": \"<string>\",\n      \"ProductGroupCode\": \"<string>\",\n      \"ProductGroupCodeSecondary\": \"<string>\",\n      \"SalePrice\": 123,\n      \"SalePriceBeforeRounding\": 123,\n      \"SalePriceReason\": \"<string>\",\n      \"URL\": \"<string>\",\n      \"VATCategory\": {\n        \"Name\": \"<string>\",\n        \"VATCategoryCode\": \"<string>\"\n      },\n      \"VATRateType\": {\n        \"Name\": \"<string>\",\n        \"Rate\": 123,\n        \"VATRateTypeCode\": \"<string>\"\n      },\n      \"Volume\": 123,\n      \"Weight\": 123,\n      \"Width\": 123\n    }\n  ]\n}"

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

{
  "Success": true,
  "Reason": "<string>"
}