curl --request POST \
  --url https://dev.waftpay.io/payments/v1/refund-reversal \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "transaction_reference": "TRC94513697913522",
  "payment_uuid": "803556523944079845",
  "amount": 400,
  "notification_url": "https://webhook.site/679ced79-7dac-4977-be7a-3d600b39c245",
  "remarks": "Test remarks"
}
'

import requests

url = "https://dev.waftpay.io/payments/v1/refund-reversal"

payload = {
    "transaction_reference": "TRC94513697913522",
    "payment_uuid": "803556523944079845",
    "amount": 400,
    "notification_url": "https://webhook.site/679ced79-7dac-4977-be7a-3d600b39c245",
    "remarks": "Test remarks"
}
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({
    transaction_reference: 'TRC94513697913522',
    payment_uuid: '803556523944079845',
    amount: 400,
    notification_url: 'https://webhook.site/679ced79-7dac-4977-be7a-3d600b39c245',
    remarks: 'Test remarks'
  })
};

fetch('https://dev.waftpay.io/payments/v1/refund-reversal', 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://dev.waftpay.io/payments/v1/refund-reversal",
  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([
    'transaction_reference' => 'TRC94513697913522',
    'payment_uuid' => '803556523944079845',
    'amount' => 400,
    'notification_url' => 'https://webhook.site/679ced79-7dac-4977-be7a-3d600b39c245',
    'remarks' => 'Test remarks'
  ]),
  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://dev.waftpay.io/payments/v1/refund-reversal"

	payload := strings.NewReader("{\n  \"transaction_reference\": \"TRC94513697913522\",\n  \"payment_uuid\": \"803556523944079845\",\n  \"amount\": 400,\n  \"notification_url\": \"https://webhook.site/679ced79-7dac-4977-be7a-3d600b39c245\",\n  \"remarks\": \"Test remarks\"\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://dev.waftpay.io/payments/v1/refund-reversal")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"transaction_reference\": \"TRC94513697913522\",\n  \"payment_uuid\": \"803556523944079845\",\n  \"amount\": 400,\n  \"notification_url\": \"https://webhook.site/679ced79-7dac-4977-be7a-3d600b39c245\",\n  \"remarks\": \"Test remarks\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://dev.waftpay.io/payments/v1/refund-reversal")

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  \"transaction_reference\": \"TRC94513697913522\",\n  \"payment_uuid\": \"803556523944079845\",\n  \"amount\": 400,\n  \"notification_url\": \"https://webhook.site/679ced79-7dac-4977-be7a-3d600b39c245\",\n  \"remarks\": \"Test remarks\"\n}"

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

{
  "code": 102,
  "status": "SUCCESS",
  "description": "Request accepted",
  "results": {
    "request_uuid": "A333RTYUT"
  }
}

{
  "error": "<string>",
  "message": "<string>",
  "param": "<string>",
  "request_id": "<string>"
}

{
  "code": "400.001.100",
  "status": "REJECTED",
  "description": "Invalid or expired token",
  "data": {}
}