curl --request POST \
  --url https://api.sandbox.capa.fi/api/partner/v2/cross-ramp/bulk/{bulkId}/invoices \
  --header 'Content-Type: application/json' \
  --header 'partner-api-key: <api-key>' \
  --data '
{
  "invoices": [
    {
      "transactionId": "3f6c1e0a-6d0b-4d4e-9a52-1b2f7d6e8c11",
      "invoiceFile": "JVBERi0xLjQK..."
    },
    {
      "transactionId": "8d1f0c3e-2b7a-4e55-9c1d-6a4f2e9b7c10",
      "invoiceFile": "JVBERi0xLjQK..."
    }
  ]
}
'

import requests

url = "https://api.sandbox.capa.fi/api/partner/v2/cross-ramp/bulk/{bulkId}/invoices"

payload = { "invoices": [
        {
            "transactionId": "3f6c1e0a-6d0b-4d4e-9a52-1b2f7d6e8c11",
            "invoiceFile": "JVBERi0xLjQK..."
        },
        {
            "transactionId": "8d1f0c3e-2b7a-4e55-9c1d-6a4f2e9b7c10",
            "invoiceFile": "JVBERi0xLjQK..."
        }
    ] }
headers = {
    "partner-api-key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'partner-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    invoices: [
      {
        transactionId: '3f6c1e0a-6d0b-4d4e-9a52-1b2f7d6e8c11',
        invoiceFile: 'JVBERi0xLjQK...'
      },
      {
        transactionId: '8d1f0c3e-2b7a-4e55-9c1d-6a4f2e9b7c10',
        invoiceFile: 'JVBERi0xLjQK...'
      }
    ]
  })
};

fetch('https://api.sandbox.capa.fi/api/partner/v2/cross-ramp/bulk/{bulkId}/invoices', 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.sandbox.capa.fi/api/partner/v2/cross-ramp/bulk/{bulkId}/invoices",
  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([
    'invoices' => [
        [
                'transactionId' => '3f6c1e0a-6d0b-4d4e-9a52-1b2f7d6e8c11',
                'invoiceFile' => 'JVBERi0xLjQK...'
        ],
        [
                'transactionId' => '8d1f0c3e-2b7a-4e55-9c1d-6a4f2e9b7c10',
                'invoiceFile' => 'JVBERi0xLjQK...'
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "partner-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.sandbox.capa.fi/api/partner/v2/cross-ramp/bulk/{bulkId}/invoices"

	payload := strings.NewReader("{\n  \"invoices\": [\n    {\n      \"transactionId\": \"3f6c1e0a-6d0b-4d4e-9a52-1b2f7d6e8c11\",\n      \"invoiceFile\": \"JVBERi0xLjQK...\"\n    },\n    {\n      \"transactionId\": \"8d1f0c3e-2b7a-4e55-9c1d-6a4f2e9b7c10\",\n      \"invoiceFile\": \"JVBERi0xLjQK...\"\n    }\n  ]\n}")

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

	req.Header.Add("partner-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.post("https://api.sandbox.capa.fi/api/partner/v2/cross-ramp/bulk/{bulkId}/invoices")
  .header("partner-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"invoices\": [\n    {\n      \"transactionId\": \"3f6c1e0a-6d0b-4d4e-9a52-1b2f7d6e8c11\",\n      \"invoiceFile\": \"JVBERi0xLjQK...\"\n    },\n    {\n      \"transactionId\": \"8d1f0c3e-2b7a-4e55-9c1d-6a4f2e9b7c10\",\n      \"invoiceFile\": \"JVBERi0xLjQK...\"\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.sandbox.capa.fi/api/partner/v2/cross-ramp/bulk/{bulkId}/invoices")

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

request = Net::HTTP::Post.new(url)
request["partner-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"invoices\": [\n    {\n      \"transactionId\": \"3f6c1e0a-6d0b-4d4e-9a52-1b2f7d6e8c11\",\n      \"invoiceFile\": \"JVBERi0xLjQK...\"\n    },\n    {\n      \"transactionId\": \"8d1f0c3e-2b7a-4e55-9c1d-6a4f2e9b7c10\",\n      \"invoiceFile\": \"JVBERi0xLjQK...\"\n    }\n  ]\n}"

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