curl --request POST \
  --url https://api.sandbox.lead.bank/v1/instant_payments/{instant_payment_id}/request_return \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'Idempotency-Key: <idempotency-key>' \
  --data '
{
  "reason": "duplication",
  "additional_information": "<string>"
}
'

import requests

url = "https://api.sandbox.lead.bank/v1/instant_payments/{instant_payment_id}/request_return"

payload = {
    "reason": "duplication",
    "additional_information": "<string>"
}
headers = {
    "Idempotency-Key": "<idempotency-key>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'Idempotency-Key': '<idempotency-key>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({reason: 'duplication', additional_information: '<string>'})
};

fetch('https://api.sandbox.lead.bank/v1/instant_payments/{instant_payment_id}/request_return', 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.lead.bank/v1/instant_payments/{instant_payment_id}/request_return",
  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([
    'reason' => 'duplication',
    'additional_information' => '<string>'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json",
    "Idempotency-Key: <idempotency-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.lead.bank/v1/instant_payments/{instant_payment_id}/request_return"

	payload := strings.NewReader("{\n  \"reason\": \"duplication\",\n  \"additional_information\": \"<string>\"\n}")

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

	req.Header.Add("Idempotency-Key", "<idempotency-key>")
	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.sandbox.lead.bank/v1/instant_payments/{instant_payment_id}/request_return")
  .header("Idempotency-Key", "<idempotency-key>")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"reason\": \"duplication\",\n  \"additional_information\": \"<string>\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.sandbox.lead.bank/v1/instant_payments/{instant_payment_id}/request_return")

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

request = Net::HTTP::Post.new(url)
request["Idempotency-Key"] = '<idempotency-key>'
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"reason\": \"duplication\",\n  \"additional_information\": \"<string>\"\n}"

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

{
  "id": "instant_payment_xyz123",
  "account_id": "account_xyz123",
  "account_number_id": "account_number_xyz123",
  "direction": "outgoing",
  "status": "posted",
  "amount": 5000,
  "currency_code": "USD",
  "debtor": {
    "name": "Alex Smith",
    "account_number": "1234567890"
  },
  "debtor_agent": {
    "routing_number": "111000111"
  },
  "creditor_agent": {
    "routing_number": "111000111"
  },
  "creditor": {
    "name": "Alex Smith",
    "account_number": "1234567890"
  },
  "payment_identifiers": {
    "end_to_end_id": "033me5upSkktRorr3J6TKZ",
    "uetr": "8dc981d2-e8c2-4a7b-8df0-0781b46328d9",
    "transaction_id": "3G0CQxK8gKLpzaaxc7A9spDiifK"
  },
  "related_objects": {
    "original_payment_id": "instant_payment_xyz123",
    "return_payment_ids": [
      "instant_payment_xyz456"
    ]
  },
  "return_requests": [
    {
      "status": "pending",
      "reason": "duplicate",
      "created_at": "2022-06-27T11:22:33Z",
      "details": "<string>",
      "deadline": "2022-07-11T23:30:00-04:00",
      "resolution": {
        "resolved_at": "2022-06-27T11:22:33Z",
        "resolved_by": "counterparty",
        "rejection_reason": "customer_no_response",
        "rejection_details": "<string>"
      }
    }
  ],
  "created_at": "2022-06-27T11:22:33Z",
  "updated_at": "2022-06-27T11:22:40Z",
  "counterparty_status": "posted",
  "description": "Payment for invoice 12345",
  "return": {
    "reason": "duplication",
    "details": "<string>"
  },
  "rejection": {
    "rejected_by": "lead",
    "reason": "non_sufficient_funds",
    "details": "<string>"
  }
}

{
  "code": "<string>",
  "title": "<string>",
  "detail": "<string>",
  "status": "<string>",
  "invalid_parameters": [
    {
      "parameter": "transaction_type",
      "reason": "<string>"
    }
  ],
  "instance": "<string>"
}

{
  "code": "<string>",
  "title": "<string>",
  "detail": "<string>",
  "status": "<string>",
  "invalid_parameters": [
    {
      "parameter": "transaction_type",
      "reason": "<string>"
    }
  ],
  "instance": "<string>"
}

{
  "code": "<string>",
  "title": "<string>",
  "detail": "<string>",
  "status": "<string>",
  "invalid_parameters": [
    {
      "parameter": "transaction_type",
      "reason": "<string>"
    }
  ],
  "instance": "<string>"
}

{
  "code": "<string>",
  "title": "<string>",
  "detail": "<string>",
  "status": "<string>",
  "invalid_parameters": [
    {
      "parameter": "transaction_type",
      "reason": "<string>"
    }
  ],
  "instance": "<string>"
}

{
  "code": "<string>",
  "title": "<string>",
  "detail": "<string>",
  "status": "<string>",
  "invalid_parameters": [
    {
      "parameter": "transaction_type",
      "reason": "<string>"
    }
  ],
  "instance": "<string>"
}

{
  "code": "<string>",
  "title": "<string>",
  "detail": "<string>",
  "status": "<string>",
  "invalid_parameters": [
    {
      "parameter": "transaction_type",
      "reason": "<string>"
    }
  ],
  "instance": "<string>"
}