curl --request PATCH \
  --url https://api.stigg.io/api/v1/contracts/{id}/billing/items/{itemRef} \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --data '
{
  "rows": [
    {
      "quantity": 123,
      "price": 123,
      "from": 123,
      "to": 123,
      "packageSize": 123
    }
  ]
}
'

import requests

url = "https://api.stigg.io/api/v1/contracts/{id}/billing/items/{itemRef}"

payload = { "rows": [
        {
            "quantity": 123,
            "price": 123,
            "from": 123,
            "to": 123,
            "packageSize": 123
        }
    ] }
headers = {
    "X-API-KEY": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'PATCH',
  headers: {'X-API-KEY': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({rows: [{quantity: 123, price: 123, from: 123, to: 123, packageSize: 123}]})
};

fetch('https://api.stigg.io/api/v1/contracts/{id}/billing/items/{itemRef}', 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.stigg.io/api/v1/contracts/{id}/billing/items/{itemRef}",
  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([
    'rows' => [
        [
                'quantity' => 123,
                'price' => 123,
                'from' => 123,
                'to' => 123,
                'packageSize' => 123
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-API-KEY: <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://api.stigg.io/api/v1/contracts/{id}/billing/items/{itemRef}"

	payload := strings.NewReader("{\n  \"rows\": [\n    {\n      \"quantity\": 123,\n      \"price\": 123,\n      \"from\": 123,\n      \"to\": 123,\n      \"packageSize\": 123\n    }\n  ]\n}")

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

	req.Header.Add("X-API-KEY", "<api-key>")
	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.stigg.io/api/v1/contracts/{id}/billing/items/{itemRef}")
  .header("X-API-KEY", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"rows\": [\n    {\n      \"quantity\": 123,\n      \"price\": 123,\n      \"from\": 123,\n      \"to\": 123,\n      \"packageSize\": 123\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.stigg.io/api/v1/contracts/{id}/billing/items/{itemRef}")

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

request = Net::HTTP::Patch.new(url)
request["X-API-KEY"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"rows\": [\n    {\n      \"quantity\": 123,\n      \"price\": 123,\n      \"from\": 123,\n      \"to\": 123,\n      \"packageSize\": 123\n    }\n  ]\n}"

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

{
  "data": {
    "contractId": "<string>",
    "externalId": "<string>",
    "subTotal": 123,
    "totalDiscount": 123,
    "totalTax": 123,
    "total": 123,
    "items": [
      {
        "itemId": "<string>",
        "name": "<string>",
        "subTotal": 123,
        "discount": 123,
        "tax": 123,
        "total": 123
      }
    ],
    "currency": "<string>",
    "activationStartDate": "2023-11-07T05:31:56Z",
    "activationEndDate": "2023-11-07T05:31:56Z",
    "netTerms": 123,
    "legalEntityId": "<string>",
    "paymentAccountId": "<string>"
  }
}

{
  "message": "<string>",
  "code": "BadUserInput",
  "reason": "<string>"
}

{
  "message": "<string>",
  "code": "Unauthenticated"
}

{
  "message": "<string>",
  "code": "IdentityForbidden"
}

{
  "message": "<string>",
  "code": "CustomerNotFound"
}

{
  "message": "<string>",
  "code": "RateLimitExceeded"
}