<?php
  use MercadoPago\Client\Payment\PaymentRefundClient;
  MercadoPagoConfig::setAccessToken("YOUR_ACCESS_TOKEN");
  
  $client = new PaymentRefundClient();
  $refund = $client->refund($payment_id, 20);
  echo $refund->id;
?>

        

          
MercadoPagoConfig.setAccessToken("YOUR_ACCESS_TOKEN");

PaymentRefundClient client = new PaymentRefundClient();

Map<String, String> customHeaders = new HashMap<>();
customHeaders.put("X-Render-In-Process-Refunds", "true");

MPRequestOptions requestOptions = MPRequestOptions.builder()
   .customHeaders(customHeaders)
   .build();

PaymentRefund refund = client.refund(paymentId, new BigDecimal(20), requestOptions);


        

          
import { MercadoPagoConfig, PaymentRefund } from 'mercadopago';

const client = new MercadoPagoConfig({ accessToken: 'YOUR_ACCESS_TOKEN' });
const paymentRefund = new PaymentRefund(client);

refund.create({
payment_id: '<PAYMENT_ID>',
body: {
amount: 100
}
}).then(console.log).catch(console.log);

        

          
sdk = mercadopago.SDK('YOUR_ACCESS_TOKEN')

refund_object = {
   'amount': 20
}

request_options = mercadopago.config.RequestOptions()
request_options.custom_headers = {
   'content-type': 'application/json',
   'X-Render-In-Process-Refunds': 'true'
}

sdk.refund().create('payment_id', refund_object, request_options)


        

          
sdk = Mercadopago::SDK.new('YOUR_ACCESS_TOKEN')

data = {
 amount: 20
}

custom_headers = {
 'X-Render-In-Process-Refunds': 'true'
}
custom_request_options = Mercadopago::RequestOptions.new(custom_headers: custom_headers)

refund = sdk.refund.create(payment_id, refund_data: data, request_options: custom_request_options)


        

          
MercadoPagoConfig.AccessToken = "YOUR_ACCESS_TOKEN";

PaymentRefundClient client = new PaymentRefundClient();

var requestOptions = new RequestOptions();
requestOptions.CustomHeaders.Add("X-Render-In-Process-Refunds", "true");

var refund = client.Refund(paymentId, 20, requestOptions);


        

          
package main

import (
	"context"
	"fmt"

	"github.com/mercadopago/sdk-go/pkg/config"
	"github.com/mercadopago/sdk-go/pkg/refund"
)

func main() {
	accessToken := "{{ACCESS_TOKEN}}"

	cfg, err := config.New(accessToken)
	if err != nil {
		fmt.Println(err)
		return
	}

	client := refund.NewClient(cfg)

	resource, err := client.Create(context.Background(), <PAYMENT_ID>)
	if err != nil {
		fmt.Println(err)
		return
	}

	fmt.Println(resource)
}

        

          
curl --location --request POST 'https://api.mercadopago.com/v1/payments/{payment_id}/refunds \

-H 'X-Render-In-Process-Refunds: true' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer YOUR_ACCESS_TOKEN' \
-H 'X-Idempotency-Key: {idempotency_key}' \
--data-raw '{
    "amount": 20
}'