curl -X POST  https://api.razorpay.com/v1/payments/pay_JJCqynf4fQS0N1/refund \
-u [YOUR_KEY_ID]:[YOUR_KEY_SECRET]
-H 'content-type: application/json'
-d '{
  "amount": 100,
  "reverse_all": true
}'

RazorpayClient razorpay = new RazorpayClient("[YOUR_KEY_ID]", "[YOUR_KEY_SECRET]");

String paymentId = "pay_JJCqynf4fQS0N1";

JSONObject params = new JSONObject();
params.put("amount",100);
params.put("reverse_all",true);

Refund payment = razorpay.payments.refund(paymentId,params);

$api = new Api($key_id, $secret);

$api->payment->fetch($paymentId)->refund(array('amount'=> '100','reverse_all'=> true));

var instance = new Razorpay({ key_id: 'YOUR_KEY_ID', key_secret: 'YOUR_SECRET' })

instance.payments.refund(paymentId,{
    amount : 100,
    reverse_all : true
})

client = razorpay.Client(auth=("YOUR_ID", "YOUR_SECRET"))

client.payment.refund(paymentId, {"amount": 100, "reverse_all": True})

require "razorpay"
Razorpay.setup('YOUR_KEY_ID', 'YOUR_SECRET')

paymentId = "pay_JJCqynf4fQS0N1"

para_attr = {
    "amount" : 100,
    "reverse_all" : 1
}

Razorpay::Payment.fetch(paymentId).refund(para_attr)

import ( razorpay "github.com/razorpay/razorpay-go" )
client := razorpay.NewClient("YOUR_KEY_ID", "YOUR_SECRET")

data:= map[string]interface{}{
  "reverse_all": true,
}
body, err := client.Payment.Refund("<paymentId>", <amount>, data, nil)

RazorpayClient client = new RazorpayClient("[YOUR_KEY_ID]", "[YOUR_KEY_SECRET]
");

String paymentId = "pay_EAdwQDe4JrhOFX";

Dictionary<string, object> param = new Dictionary<string, object>();
param.Add("amount",100);
param.Add("reverse_all",true);

Refund transfer = client.Payment.Fetch("pay_MZS53duPD7FNd1").Refund(param);

razorpay route refund-with-reversal pay_ABC123 --amount 5000 --reverse-all=true 

{
  "id": "rfnd_JJFNlNXPHY640A",
  "entity": "refund",
  "amount": 100,
  "currency": "INR",
  "payment_id": "pay_JJCqynf4fQS0N1",
  "notes": [],
  "receipt": null,
  "acquirer_data": {
    "arn": null
  },
  "created_at": 1649941680,
  "batch_id": null,
  "status": "processed",
  "speed_processed": "normal",
  "speed_requested": "normal"
}

{
   "error":{
      "code":"BAD_REQUEST_ERROR",
      "description":"The api key provided is invalid",
      "source":"NA",
      "step":"NA",
      "reason":"NA",
      "metadata":{

      }
   }
}

{
  "id": "rfnd_JJFNlNXPHY640A",
  "entity": "refund",
  "amount": 100,
  "currency": "MYR",
  "payment_id": "pay_JJCqynf4fQS0N1",
  "notes": [],
  "receipt": null,
  "acquirer_data": {
    "arn": null
  },
  "created_at": 1649941680,
  "batch_id": null,
  "status": "processed",
  "speed_processed": "normal",
  "speed_requested": "normal"
}

{
   "error":{
      "code":"BAD_REQUEST_ERROR",
      "description":"The api key provided is invalid",
      "source":"NA",
      "step":"NA",
      "reason":"NA",
      "metadata":{

      }
   }
}