curl --request POST \
  --url https://api.jtl-cloud.com/erp/salesOrders/{salesOrderId}/lineitems \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'x-tenant-id: <x-tenant-id>' \
  --data '
[
  {
    "Quantity": 2,
    "ItemId": 123,
    "Name": "Awesome Binoculars",
    "SKU": "ART2394871",
    "SalesUnit": "stk",
    "SalesPriceNet": 16.8,
    "SalesPriceGross": 19.99,
    "Discount": 5,
    "PurchasePriceNet": 13.46,
    "TaxRate": 19,
    "Notice": "Without sugar"
  }
]
'

import requests

url = "https://api.jtl-cloud.com/erp/salesOrders/{salesOrderId}/lineitems"

payload = [
    {
        "Quantity": 2,
        "ItemId": 123,
        "Name": "Awesome Binoculars",
        "SKU": "ART2394871",
        "SalesUnit": "stk",
        "SalesPriceNet": 16.8,
        "SalesPriceGross": 19.99,
        "Discount": 5,
        "PurchasePriceNet": 13.46,
        "TaxRate": 19,
        "Notice": "Without sugar"
    }
]
headers = {
    "x-tenant-id": "<x-tenant-id>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'x-tenant-id': '<x-tenant-id>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify([
    {
      Quantity: 2,
      ItemId: 123,
      Name: 'Awesome Binoculars',
      SKU: 'ART2394871',
      SalesUnit: 'stk',
      SalesPriceNet: 16.8,
      SalesPriceGross: 19.99,
      Discount: 5,
      PurchasePriceNet: 13.46,
      TaxRate: 19,
      Notice: 'Without sugar'
    }
  ])
};

fetch('https://api.jtl-cloud.com/erp/salesOrders/{salesOrderId}/lineitems', 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.jtl-cloud.com/erp/salesOrders/{salesOrderId}/lineitems",
  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([
    [
        'Quantity' => 2,
        'ItemId' => 123,
        'Name' => 'Awesome Binoculars',
        'SKU' => 'ART2394871',
        'SalesUnit' => 'stk',
        'SalesPriceNet' => 16.8,
        'SalesPriceGross' => 19.99,
        'Discount' => 5,
        'PurchasePriceNet' => 13.46,
        'TaxRate' => 19,
        'Notice' => 'Without sugar'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json",
    "x-tenant-id: <x-tenant-id>"
  ],
]);

$response = curl_exec($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.jtl-cloud.com/erp/salesOrders/{salesOrderId}/lineitems"

	payload := strings.NewReader("[\n  {\n    \"Quantity\": 2,\n    \"ItemId\": 123,\n    \"Name\": \"Awesome Binoculars\",\n    \"SKU\": \"ART2394871\",\n    \"SalesUnit\": \"stk\",\n    \"SalesPriceNet\": 16.8,\n    \"SalesPriceGross\": 19.99,\n    \"Discount\": 5,\n    \"PurchasePriceNet\": 13.46,\n    \"TaxRate\": 19,\n    \"Notice\": \"Without sugar\"\n  }\n]")

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

	req.Header.Add("x-tenant-id", "<x-tenant-id>")
	req.Header.Add("Authorization", "Bearer <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://api.jtl-cloud.com/erp/salesOrders/{salesOrderId}/lineitems")
  .header("x-tenant-id", "<x-tenant-id>")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("[\n  {\n    \"Quantity\": 2,\n    \"ItemId\": 123,\n    \"Name\": \"Awesome Binoculars\",\n    \"SKU\": \"ART2394871\",\n    \"SalesUnit\": \"stk\",\n    \"SalesPriceNet\": 16.8,\n    \"SalesPriceGross\": 19.99,\n    \"Discount\": 5,\n    \"PurchasePriceNet\": 13.46,\n    \"TaxRate\": 19,\n    \"Notice\": \"Without sugar\"\n  }\n]")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.jtl-cloud.com/erp/salesOrders/{salesOrderId}/lineitems")

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

request = Net::HTTP::Post.new(url)
request["x-tenant-id"] = '<x-tenant-id>'
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "[\n  {\n    \"Quantity\": 2,\n    \"ItemId\": 123,\n    \"Name\": \"Awesome Binoculars\",\n    \"SKU\": \"ART2394871\",\n    \"SalesUnit\": \"stk\",\n    \"SalesPriceNet\": 16.8,\n    \"SalesPriceGross\": 19.99,\n    \"Discount\": 5,\n    \"PurchasePriceNet\": 13.46,\n    \"TaxRate\": 19,\n    \"Notice\": \"Without sugar\"\n  }\n]"

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

[
  {
    "Id": 123,
    "SalesOrderId": 123,
    "ItemId": 123,
    "Name": "Awesome Binoculars",
    "SKU": "ART2394871",
    "Quantity": 2,
    "QuantityDelivered": 2,
    "QuantityReturned": 1,
    "SalesUnit": "stk",
    "SalesPriceNet": 16.8,
    "SalesPriceGross": 19.99,
    "Discount": 5,
    "PurchasePriceNet": 13.46,
    "TaxRate": 19,
    "Notice": "Without sugar"
  }
]

{
  "ErrorCode": "<string>",
  "ValidationErrors": {},
  "Errors": {},
  "ErrorMessage": "<string>",
  "Stacktrace": "<string>"
}