curl --request PUT \
  --url https://api.maesn.dev/accounting/items/{itemId} \
  --header 'Content-Type: application/json' \
  --header 'X-ACCOUNT-KEY: <x-account-key>' \
  --header 'X-API-KEY: <x-api-key>' \
  --data '
{
  "assetAccountId": "80",
  "expenseAccountId": "81",
  "incomeAccountId": "79",
  "inventoryStartDate": "2021-01-01",
  "itemNumber": "12345-A",
  "name": "Handmade Plastic Chair",
  "priceIncludesTax": true,
  "stockCount": 11,
  "taxCode": "TAX19",
  "taxRatePercentage": 19,
  "type": "PRODUCT",
  "unitName": "PIECE",
  "unitPurchasePrice": 10,
  "unitSalesPrice": 20.5
}
'

import requests

url = "https://api.maesn.dev/accounting/items/{itemId}"

payload = {
    "assetAccountId": "80",
    "expenseAccountId": "81",
    "incomeAccountId": "79",
    "inventoryStartDate": "2021-01-01",
    "itemNumber": "12345-A",
    "name": "Handmade Plastic Chair",
    "priceIncludesTax": True,
    "stockCount": 11,
    "taxCode": "TAX19",
    "taxRatePercentage": 19,
    "type": "PRODUCT",
    "unitName": "PIECE",
    "unitPurchasePrice": 10,
    "unitSalesPrice": 20.5
}
headers = {
    "X-API-KEY": "<x-api-key>",
    "X-ACCOUNT-KEY": "<x-account-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'PUT',
  headers: {
    'X-API-KEY': '<x-api-key>',
    'X-ACCOUNT-KEY': '<x-account-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    assetAccountId: '80',
    expenseAccountId: '81',
    incomeAccountId: '79',
    inventoryStartDate: '2021-01-01',
    itemNumber: '12345-A',
    name: 'Handmade Plastic Chair',
    priceIncludesTax: true,
    stockCount: 11,
    taxCode: 'TAX19',
    taxRatePercentage: 19,
    type: 'PRODUCT',
    unitName: 'PIECE',
    unitPurchasePrice: 10,
    unitSalesPrice: 20.5
  })
};

fetch('https://api.maesn.dev/accounting/items/{itemId}', 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.maesn.dev/accounting/items/{itemId}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PUT",
  CURLOPT_POSTFIELDS => json_encode([
    'assetAccountId' => '80',
    'expenseAccountId' => '81',
    'incomeAccountId' => '79',
    'inventoryStartDate' => '2021-01-01',
    'itemNumber' => '12345-A',
    'name' => 'Handmade Plastic Chair',
    'priceIncludesTax' => true,
    'stockCount' => 11,
    'taxCode' => 'TAX19',
    'taxRatePercentage' => 19,
    'type' => 'PRODUCT',
    'unitName' => 'PIECE',
    'unitPurchasePrice' => 10,
    'unitSalesPrice' => 20.5
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-ACCOUNT-KEY: <x-account-key>",
    "X-API-KEY: <x-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.maesn.dev/accounting/items/{itemId}"

	payload := strings.NewReader("{\n  \"assetAccountId\": \"80\",\n  \"expenseAccountId\": \"81\",\n  \"incomeAccountId\": \"79\",\n  \"inventoryStartDate\": \"2021-01-01\",\n  \"itemNumber\": \"12345-A\",\n  \"name\": \"Handmade Plastic Chair\",\n  \"priceIncludesTax\": true,\n  \"stockCount\": 11,\n  \"taxCode\": \"TAX19\",\n  \"taxRatePercentage\": 19,\n  \"type\": \"PRODUCT\",\n  \"unitName\": \"PIECE\",\n  \"unitPurchasePrice\": 10,\n  \"unitSalesPrice\": 20.5\n}")

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

	req.Header.Add("X-API-KEY", "<x-api-key>")
	req.Header.Add("X-ACCOUNT-KEY", "<x-account-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.put("https://api.maesn.dev/accounting/items/{itemId}")
  .header("X-API-KEY", "<x-api-key>")
  .header("X-ACCOUNT-KEY", "<x-account-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"assetAccountId\": \"80\",\n  \"expenseAccountId\": \"81\",\n  \"incomeAccountId\": \"79\",\n  \"inventoryStartDate\": \"2021-01-01\",\n  \"itemNumber\": \"12345-A\",\n  \"name\": \"Handmade Plastic Chair\",\n  \"priceIncludesTax\": true,\n  \"stockCount\": 11,\n  \"taxCode\": \"TAX19\",\n  \"taxRatePercentage\": 19,\n  \"type\": \"PRODUCT\",\n  \"unitName\": \"PIECE\",\n  \"unitPurchasePrice\": 10,\n  \"unitSalesPrice\": 20.5\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.maesn.dev/accounting/items/{itemId}")

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

request = Net::HTTP::Put.new(url)
request["X-API-KEY"] = '<x-api-key>'
request["X-ACCOUNT-KEY"] = '<x-account-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"assetAccountId\": \"80\",\n  \"expenseAccountId\": \"81\",\n  \"incomeAccountId\": \"79\",\n  \"inventoryStartDate\": \"2021-01-01\",\n  \"itemNumber\": \"12345-A\",\n  \"name\": \"Handmade Plastic Chair\",\n  \"priceIncludesTax\": true,\n  \"stockCount\": 11,\n  \"taxCode\": \"TAX19\",\n  \"taxRatePercentage\": 19,\n  \"type\": \"PRODUCT\",\n  \"unitName\": \"PIECE\",\n  \"unitPurchasePrice\": 10,\n  \"unitSalesPrice\": 20.5\n}"

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

{
  "meta": {
    "warnings": [
      "Field not used by target system"
    ],
    "pagination": {
      "total": 125,
      "perPage": 50,
      "currentPage": 1,
      "totalPages": 3
    }
  },
  "data": {
    "id": "02c74e8a-b95b-ef11-bfe2-002248e5aac5",
    "assetAccountId": "80",
    "expenseAccountId": "81",
    "incomeAccountId": "79",
    "inventoryStartDate": "2021-01-01",
    "itemNumber": "12345-A",
    "lastModifiedDate": "2021-01-01T00:00:00Z",
    "name": "Handmade Plastic Chair",
    "priceIncludesTax": true,
    "stockCount": 11,
    "taxCode": "TAX19",
    "taxRatePercentage": 19,
    "type": "PRODUCT",
    "unitName": "PIECE",
    "unitPurchasePrice": 10,
    "unitSalesPrice": 20.5
  }
}