curl --request POST \
  --url https://sandbox.cashfree.com/api/v2/subscriptions/mandate/port \
  --header 'Content-Type: application/json' \
  --header 'X-Client-Id: <x-client-id>' \
  --header 'X-Client-Secret: <x-client-secret>' \
  --data '
{
  "customerDetails": {
    "customerEmail": "john.doe@gmail.com",
    "customerPhone": "9999999999",
    "debitAccountNumber": "1234567890",
    "debitAccountHolderName": "John Doe",
    "debitBankId": "SBIN",
    "debitAccountType": "SAVINGS"
  },
  "subscriptionDetails": {
    "umrn": "SBIN0000000000000000",
    "paymentType": "E_MANDATE",
    "fixedAmount": 10,
    "maxAmount": 100,
    "portingFrequency": "MNTH",
    "startDate": "2025-03-28",
    "endDate": "2025-08-04",
    "maxCycles": 10,
    "subscriptionId": "subs-import-mandate",
    "firstChargeDate": "2025-04-03"
  }
}
'

import requests

url = "https://sandbox.cashfree.com/api/v2/subscriptions/mandate/port"

payload = {
    "customerDetails": {
        "customerEmail": "john.doe@gmail.com",
        "customerPhone": "9999999999",
        "debitAccountNumber": "1234567890",
        "debitAccountHolderName": "John Doe",
        "debitBankId": "SBIN",
        "debitAccountType": "SAVINGS"
    },
    "subscriptionDetails": {
        "umrn": "SBIN0000000000000000",
        "paymentType": "E_MANDATE",
        "fixedAmount": 10,
        "maxAmount": 100,
        "portingFrequency": "MNTH",
        "startDate": "2025-03-28",
        "endDate": "2025-08-04",
        "maxCycles": 10,
        "subscriptionId": "subs-import-mandate",
        "firstChargeDate": "2025-04-03"
    }
}
headers = {
    "X-Client-Id": "<x-client-id>",
    "X-Client-Secret": "<x-client-secret>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'X-Client-Id': '<x-client-id>',
    'X-Client-Secret': '<x-client-secret>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    customerDetails: {
      customerEmail: 'john.doe@gmail.com',
      customerPhone: '9999999999',
      debitAccountNumber: '1234567890',
      debitAccountHolderName: 'John Doe',
      debitBankId: 'SBIN',
      debitAccountType: 'SAVINGS'
    },
    subscriptionDetails: {
      umrn: 'SBIN0000000000000000',
      paymentType: 'E_MANDATE',
      fixedAmount: 10,
      maxAmount: 100,
      portingFrequency: 'MNTH',
      startDate: '2025-03-28',
      endDate: '2025-08-04',
      maxCycles: 10,
      subscriptionId: 'subs-import-mandate',
      firstChargeDate: '2025-04-03'
    }
  })
};

fetch('https://sandbox.cashfree.com/api/v2/subscriptions/mandate/port', 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://sandbox.cashfree.com/api/v2/subscriptions/mandate/port",
  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([
    'customerDetails' => [
        'customerEmail' => 'john.doe@gmail.com',
        'customerPhone' => '9999999999',
        'debitAccountNumber' => '1234567890',
        'debitAccountHolderName' => 'John Doe',
        'debitBankId' => 'SBIN',
        'debitAccountType' => 'SAVINGS'
    ],
    'subscriptionDetails' => [
        'umrn' => 'SBIN0000000000000000',
        'paymentType' => 'E_MANDATE',
        'fixedAmount' => 10,
        'maxAmount' => 100,
        'portingFrequency' => 'MNTH',
        'startDate' => '2025-03-28',
        'endDate' => '2025-08-04',
        'maxCycles' => 10,
        'subscriptionId' => 'subs-import-mandate',
        'firstChargeDate' => '2025-04-03'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-Client-Id: <x-client-id>",
    "X-Client-Secret: <x-client-secret>"
  ],
]);

$response = curl_exec($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://sandbox.cashfree.com/api/v2/subscriptions/mandate/port"

	payload := strings.NewReader("{\n  \"customerDetails\": {\n    \"customerEmail\": \"john.doe@gmail.com\",\n    \"customerPhone\": \"9999999999\",\n    \"debitAccountNumber\": \"1234567890\",\n    \"debitAccountHolderName\": \"John Doe\",\n    \"debitBankId\": \"SBIN\",\n    \"debitAccountType\": \"SAVINGS\"\n  },\n  \"subscriptionDetails\": {\n    \"umrn\": \"SBIN0000000000000000\",\n    \"paymentType\": \"E_MANDATE\",\n    \"fixedAmount\": 10,\n    \"maxAmount\": 100,\n    \"portingFrequency\": \"MNTH\",\n    \"startDate\": \"2025-03-28\",\n    \"endDate\": \"2025-08-04\",\n    \"maxCycles\": 10,\n    \"subscriptionId\": \"subs-import-mandate\",\n    \"firstChargeDate\": \"2025-04-03\"\n  }\n}")

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

	req.Header.Add("X-Client-Id", "<x-client-id>")
	req.Header.Add("X-Client-Secret", "<x-client-secret>")
	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://sandbox.cashfree.com/api/v2/subscriptions/mandate/port")
  .header("X-Client-Id", "<x-client-id>")
  .header("X-Client-Secret", "<x-client-secret>")
  .header("Content-Type", "application/json")
  .body("{\n  \"customerDetails\": {\n    \"customerEmail\": \"john.doe@gmail.com\",\n    \"customerPhone\": \"9999999999\",\n    \"debitAccountNumber\": \"1234567890\",\n    \"debitAccountHolderName\": \"John Doe\",\n    \"debitBankId\": \"SBIN\",\n    \"debitAccountType\": \"SAVINGS\"\n  },\n  \"subscriptionDetails\": {\n    \"umrn\": \"SBIN0000000000000000\",\n    \"paymentType\": \"E_MANDATE\",\n    \"fixedAmount\": 10,\n    \"maxAmount\": 100,\n    \"portingFrequency\": \"MNTH\",\n    \"startDate\": \"2025-03-28\",\n    \"endDate\": \"2025-08-04\",\n    \"maxCycles\": 10,\n    \"subscriptionId\": \"subs-import-mandate\",\n    \"firstChargeDate\": \"2025-04-03\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://sandbox.cashfree.com/api/v2/subscriptions/mandate/port")

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

request = Net::HTTP::Post.new(url)
request["X-Client-Id"] = '<x-client-id>'
request["X-Client-Secret"] = '<x-client-secret>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"customerDetails\": {\n    \"customerEmail\": \"john.doe@gmail.com\",\n    \"customerPhone\": \"9999999999\",\n    \"debitAccountNumber\": \"1234567890\",\n    \"debitAccountHolderName\": \"John Doe\",\n    \"debitBankId\": \"SBIN\",\n    \"debitAccountType\": \"SAVINGS\"\n  },\n  \"subscriptionDetails\": {\n    \"umrn\": \"SBIN0000000000000000\",\n    \"paymentType\": \"E_MANDATE\",\n    \"fixedAmount\": 10,\n    \"maxAmount\": 100,\n    \"portingFrequency\": \"MNTH\",\n    \"startDate\": \"2025-03-28\",\n    \"endDate\": \"2025-08-04\",\n    \"maxCycles\": 10,\n    \"subscriptionId\": \"subs-import-mandate\",\n    \"firstChargeDate\": \"2025-04-03\"\n  }\n}"

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

{
  "status": "OK",
  "message": "Mandate Porting Successful",
  "data": {
    "subReferenceId": 12345,
    "subscriptionId": "subs-import-mandate",
    "status": "ACTIVE"
  }
}

{
  "status": "ERROR",
  "subCode": "400",
  "message": "Invalid or missing parameters in the request."
}

{
  "status": "ERROR",
  "message": "Server encountered an unexpected condition."
}