curl --request GET \
  --url https://api.maesn.dev/accounting/invoices/{invoiceId} \
  --header 'X-ACCOUNT-KEY: <x-account-key>' \
  --header 'X-API-KEY: <x-api-key>'

import requests

url = "https://api.maesn.dev/accounting/invoices/{invoiceId}"

headers = {
    "X-API-KEY": "<x-api-key>",
    "X-ACCOUNT-KEY": "<x-account-key>"
}

response = requests.get(url, headers=headers)

print(response.text)

const options = {
  method: 'GET',
  headers: {'X-API-KEY': '<x-api-key>', 'X-ACCOUNT-KEY': '<x-account-key>'}
};

fetch('https://api.maesn.dev/accounting/invoices/{invoiceId}', 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/invoices/{invoiceId}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "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"
	"net/http"
	"io"
)

func main() {

	url := "https://api.maesn.dev/accounting/invoices/{invoiceId}"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("X-API-KEY", "<x-api-key>")
	req.Header.Add("X-ACCOUNT-KEY", "<x-account-key>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://api.maesn.dev/accounting/invoices/{invoiceId}")
  .header("X-API-KEY", "<x-api-key>")
  .header("X-ACCOUNT-KEY", "<x-account-key>")
  .asString();

require 'uri'
require 'net/http'

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

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

request = Net::HTTP::Get.new(url)
request["X-API-KEY"] = '<x-api-key>'
request["X-ACCOUNT-KEY"] = '<x-account-key>'

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": "9714f3a2-5b8e-4d1b-8a0c-9f6e7d2f3e4b",
    "invoiceId": "9714f3a2-5b8e-4d1b-8a0c-9f6e7d2f3e4b",
    "addresses": [
      {
        "addressLine1": "Main street 45",
        "addressLine2": "2nd floor",
        "city": "Berlin",
        "countryCode": "DE",
        "postalCode": "10243",
        "type": "BILLING"
      }
    ],
    "contactId": "eaa28f49-6028-4b6e-bb12-d8f6278073fc",
    "createdDate": "2021-01-01T00:00:00Z",
    "currency": "EUR",
    "discountAmount": 10,
    "dueDate": "2021-02-01T00:00:00Z",
    "fileId": "93c6b8e0-80a4-4c22-a46c-18beebab82d6",
    "invoiceDate": "2021-01-01T00:00:00Z",
    "invoiceNumber": "1020",
    "invoiceType": "STANDARD",
    "journalCode": "50",
    "lineAmountType": "EXCLUSIVE",
    "lineItems": [
      {
        "lineItemId": "987a2b3c-4d5e-6f7g-8h9i-0j1k2l3m4n5o",
        "accountId": "6733a433-9662-4a40-8e36-e38ebda94fe1",
        "createdDate": "2021-01-01T00:00:00Z",
        "description": "SEOUL Guest Chair, red",
        "dimensions": [
          {
            "id": "c1d2e3f4-5678-9abc-def0-1234567890ab",
            "categoryName": "CostCenter",
            "name": "C1"
          }
        ],
        "discountItemAmount": 10,
        "discountItemPercentage": 10,
        "grossAmount": 109,
        "itemsAmount": 100,
        "itemId": "9fc4f3a2-5b8e-4d1b-8a0c-9f6e7d2f3e4b",
        "name": "RED CHAIR",
        "quantity": 1,
        "taxCode": "03",
        "taxRatePercentage": 19,
        "unitAmount": 100,
        "updatedDate": "2021-01-01T00:00:00Z"
      }
    ],
    "name": "Office Supplies",
    "oneLineAddress": "Main street 45, Berlin",
    "paidDate": "2021-01-25T00:00:00Z",
    "paymentStatus": "PENDING",
    "paymentTermDuration": 30,
    "paymentTermId": "1",
    "reference": "RCXF197253F",
    "salesOrderId": "30911",
    "shippingDate": "2021-01-01T00:00:00Z",
    "status": "DRAFT",
    "sumNetAmount": 100,
    "taxRule": "NET",
    "totalAmount": 109,
    "totalTaxAmount": 19,
    "updatedDate": "2021-01-01T00:00:00Z"
  }
}