curl --request POST \
  --url https://api.paywise.de/v1/mandates/{mandate_id}/requests-to-client/{request_id}/answer/documents/ \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "file": "<string>"
}
'

import requests

url = "https://api.paywise.de/v1/mandates/{mandate_id}/requests-to-client/{request_id}/answer/documents/"

payload = { "file": "<string>" }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({file: '<string>'})
};

fetch('https://api.paywise.de/v1/mandates/{mandate_id}/requests-to-client/{request_id}/answer/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.paywise.de/v1/mandates/{mandate_id}/requests-to-client/{request_id}/answer/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 => json_encode([
    'file' => '<string>'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "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.paywise.de/v1/mandates/{mandate_id}/requests-to-client/{request_id}/answer/documents/"

	payload := strings.NewReader("{\n  \"file\": \"<string>\"\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	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.paywise.de/v1/mandates/{mandate_id}/requests-to-client/{request_id}/answer/documents/")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"file\": \"<string>\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.paywise.de/v1/mandates/{mandate_id}/requests-to-client/{request_id}/answer/documents/")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"file\": \"<string>\"\n}"

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

{
  "id": "b2c3d4e5-f6a7-5e44-9f0a-d8e9f0a1b2c3",
  "href": "https://api.paywise.de/v1/mandates/5600672e-2bfa-488c-b23a-460c1dd1f833/requests-to-client/b2c3d4e5-f6a7-5e44-9f0a-d8e9f0a1b2c3/",
  "mandate": {
    "id": "5600672e-2bfa-488c-b23a-460c1dd1f833",
    "href": "https://api.paywise.de/v1/mandates/5600672e-2bfa-488c-b23a-460c1dd1f833/",
    "reference_number": "K25-8Q114"
  },
  "title": "Dokumente angefordert",
  "description": "Wir benötigen eine Kopie der Originalrechnung zur Prüfung.",
  "allowed_answer_types": "fileupload",
  "file_attachments": [],
  "answered": true,
  "answer": {
    "id": "c3d4e5f6-a7b8-6f55-0a1b-e9f0a1b2c3d4",
    "text": "Anbei die angeforderten Dokumente.",
    "additional_comment": null,
    "files": [
      {
        "id": "d4e5f6a7-b8c9-0123-4567-890abcdef012",
        "filename": "rechnung_RE2023001.pdf",
        "mime_type": "application/pdf",
        "file_size": 234567
      }
    ],
    "created": "2025-11-16T14:22:00Z"
  },
  "created": "2025-11-15T08:00:00Z",
  "answered_at": "2025-11-16T14:22:00Z"
}