curl --request POST \
  --url https://api.chift.eu/consumers/{consumer_id}/invoicing/products \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "Consulting services",
  "unit_price": 100,
  "tax_id": "<invoicing-tax-id>",
  "code": "SKU-0001",
  "unit": "unit",
  "category": "Services",
  "currency": "EUR",
  "description": "Consulting services",
  "cost": 0
}
'

import requests

url = "https://api.chift.eu/consumers/{consumer_id}/invoicing/products"

payload = {
    "name": "Consulting services",
    "unit_price": 100,
    "tax_id": "<invoicing-tax-id>",
    "code": "SKU-0001",
    "unit": "unit",
    "category": "Services",
    "currency": "EUR",
    "description": "Consulting services",
    "cost": 0
}
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({
    name: 'Consulting services',
    unit_price: 100,
    tax_id: '<invoicing-tax-id>',
    code: 'SKU-0001',
    unit: 'unit',
    category: 'Services',
    currency: 'EUR',
    description: 'Consulting services',
    cost: 0
  })
};

fetch('https://api.chift.eu/consumers/{consumer_id}/invoicing/products', 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.chift.eu/consumers/{consumer_id}/invoicing/products",
  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([
    'name' => 'Consulting services',
    'unit_price' => 100,
    'tax_id' => '<invoicing-tax-id>',
    'code' => 'SKU-0001',
    'unit' => 'unit',
    'category' => 'Services',
    'currency' => 'EUR',
    'description' => 'Consulting services',
    'cost' => 0
  ]),
  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://api.chift.eu/consumers/{consumer_id}/invoicing/products"

	payload := strings.NewReader("{\n  \"name\": \"Consulting services\",\n  \"unit_price\": 100,\n  \"tax_id\": \"<invoicing-tax-id>\",\n  \"code\": \"SKU-0001\",\n  \"unit\": \"unit\",\n  \"category\": \"Services\",\n  \"currency\": \"EUR\",\n  \"description\": \"Consulting services\",\n  \"cost\": 0\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://api.chift.eu/consumers/{consumer_id}/invoicing/products")
  .header("Content-Type", "application/json")
  .body("{\n  \"name\": \"Consulting services\",\n  \"unit_price\": 100,\n  \"tax_id\": \"<invoicing-tax-id>\",\n  \"code\": \"SKU-0001\",\n  \"unit\": \"unit\",\n  \"category\": \"Services\",\n  \"currency\": \"EUR\",\n  \"description\": \"Consulting services\",\n  \"cost\": 0\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.chift.eu/consumers/{consumer_id}/invoicing/products")

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  \"name\": \"Consulting services\",\n  \"unit_price\": 100,\n  \"tax_id\": \"<invoicing-tax-id>\",\n  \"code\": \"SKU-0001\",\n  \"unit\": \"unit\",\n  \"category\": \"Services\",\n  \"currency\": \"EUR\",\n  \"description\": \"Consulting services\",\n  \"cost\": 0\n}"

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

{
  "id": "<this-id>",
  "source_ref": {
    "id": "<target-software-id>",
    "model": "invoice"
  },
  "name": "Consulting services",
  "unit_price": 100,
  "tax_id": "<invoicing-tax-id>",
  "code": "SKU-0001",
  "unit": "unit",
  "category": "Services",
  "currency": "EUR",
  "description": "Consulting services",
  "cost": 0,
  "available_quantity": 0
}

{
  "message": "Error while trying to perform your request",
  "status": "error"
}

{
  "message": "Validation error",
  "status": "error",
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>",
      "input": "<unknown>",
      "ctx": {}
    }
  ]
}