curl --request POST \
  --url https://api-sandbox.endl.io/api/v0/customer/{userId}/ubo/{uboRef}/documents \
  --header 'API-KEY: <api-key>' \
  --header 'Api-Version: <api-version>' \
  --header 'Content-Type: multipart/form-data' \
  --form document=@example-file \
  --form 'idDocType=<string>' \
  --form 'country=<string>' \
  --form 'side=<string>'

import requests

url = "https://api-sandbox.endl.io/api/v0/customer/{userId}/ubo/{uboRef}/documents"

files = { "document": ("example-file", open("example-file", "rb")) }
payload = {
    "idDocType": "<string>",
    "country": "<string>",
    "side": "<string>"
}
headers = {
    "Api-Version": "<api-version>",
    "API-KEY": "<api-key>"
}

response = requests.post(url, data=payload, files=files, headers=headers)

print(response.text)

const form = new FormData();
form.append('document', '<string>');
form.append('idDocType', '<string>');
form.append('country', '<string>');
form.append('side', '<string>');

const options = {
  method: 'POST',
  headers: {'Api-Version': '<api-version>', 'API-KEY': '<api-key>'}
};

options.body = form;

fetch('https://api-sandbox.endl.io/api/v0/customer/{userId}/ubo/{uboRef}/documents', 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.endl.io/api/v0/customer/{userId}/ubo/{uboRef}/documents",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"document\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"idDocType\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"country\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"side\"\r\n\r\n<string>\r\n-----011000010111000001101001--",
  CURLOPT_HTTPHEADER => [
    "API-KEY: <api-key>",
    "Api-Version: <api-version>",
    "Content-Type: multipart/form-data"
  ],
]);

$response = curl_exec($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.endl.io/api/v0/customer/{userId}/ubo/{uboRef}/documents"

	payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"document\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"idDocType\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"country\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"side\"\r\n\r\n<string>\r\n-----011000010111000001101001--")

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

	req.Header.Add("Api-Version", "<api-version>")
	req.Header.Add("API-KEY", "<api-key>")

	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.endl.io/api/v0/customer/{userId}/ubo/{uboRef}/documents")
  .header("Api-Version", "<api-version>")
  .header("API-KEY", "<api-key>")
  .body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"document\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"idDocType\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"country\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"side\"\r\n\r\n<string>\r\n-----011000010111000001101001--")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api-sandbox.endl.io/api/v0/customer/{userId}/ubo/{uboRef}/documents")

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

request = Net::HTTP::Post.new(url)
request["Api-Version"] = '<api-version>'
request["API-KEY"] = '<api-key>'
request.body = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"document\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"idDocType\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"country\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"side\"\r\n\r\n<string>\r\n-----011000010111000001101001--"

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

{
  "accepted": true,
  "status": "INITIATED",
  "missing": [
    "SELFIE",
    "PROOF_OF_RESIDENCE"
  ]
}

{
  "code": 400,
  "message": "<string>",
  "status": "ERROR",
  "data": null,
  "errors": [
    {
      "code": "<string>",
      "message": "<string>",
      "field": "<string>"
    }
  ]
}

{
  "code": 401,
  "message": "Invalid API key",
  "status": "ERROR",
  "data": null,
  "errors": [
    {
      "code": "ERRCORE_1004",
      "message": "Invalid API key",
      "field": null
    }
  ]
}

{
  "code": 400,
  "message": "<string>",
  "status": "ERROR",
  "data": null,
  "errors": [
    {
      "code": "<string>",
      "message": "<string>",
      "field": "<string>"
    }
  ]
}

{
  "code": 413,
  "message": "File exceeds the maximum upload size of 5 MB",
  "status": "ERROR",
  "data": null,
  "errors": [
    {
      "code": "ERRCORE_1001",
      "message": "File too large",
      "field": null
    }
  ]
}