curl --request POST \
  --url https://api.sandbox.primer.io/payments/{id}/cancel \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --data '
{
  "reason": "Customer cancelled order #1234."
}
'

import requests

url = "https://api.sandbox.primer.io/payments/{id}/cancel"

payload = { "reason": "Customer cancelled order #1234." }
headers = {
    "X-API-KEY": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'X-API-KEY': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({reason: 'Customer cancelled order #1234.'})
};

fetch('https://api.sandbox.primer.io/payments/{id}/cancel', 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.primer.io/payments/{id}/cancel",
  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' => 'Customer cancelled order #1234.'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-API-KEY: <api-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.primer.io/payments/{id}/cancel"

	payload := strings.NewReader("{\n  \"reason\": \"Customer cancelled order #1234.\"\n}")

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

	req.Header.Add("X-API-KEY", "<api-key>")
	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.primer.io/payments/{id}/cancel")
  .header("X-API-KEY", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"reason\": \"Customer cancelled order #1234.\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.sandbox.primer.io/payments/{id}/cancel")

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

request = Net::HTTP::Post.new(url)
request["X-API-KEY"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"reason\": \"Customer cancelled order #1234.\"\n}"

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

{
  "id": "kHdEw9EG",
  "date": "2021-02-21T15:36:16.367687",
  "status": "CANCELLED",
  "orderId": "order-abc",
  "customerId": "customer-123",
  "currencyCode": "EUR",
  "amount": 42,
  "paymentMethod": {
    "paymentMethodToken": "heNwnqaeRiqvY1UcslfQc3wxNjEzOTIxNjc4",
    "vaultedPaymentMethodToken": "_xlXlmBcTnuFxc2N3HAI73wxNjE1NTU5ODY5",
    "descriptor": "Purchase: Socks",
    "analyticsId": "VtkMDAxZW5isH0HsbbNxZ3lo",
    "paymentMethodType": "PAYMENT_CARD",
    "paymentMethodData": {
      "first6Digits": "411111",
      "firstDigits": "41111111",
      "last4Digits": "1111",
      "expirationMonth": "12",
      "expirationYear": "2030",
      "cardholderName": "John Biggins",
      "network": "Visa",
      "isNetworkTokenized": false,
      "binData": {
        "network": "VISA",
        "regionalRestriction": "UNKNOWN",
        "accountNumberType": "UNKNOWN",
        "accountFundingType": "UNKNOWN",
        "prepaidReloadableIndicator": "NOT_APPLICABLE",
        "productUsageType": "UNKNOWN",
        "productCode": "VISA",
        "productName": "VISA"
      }
    }
  },
  "processor": {
    "name": "STRIPE",
    "processor_merchant_id": "acct_stripe_1234",
    "amountCaptured": 0,
    "amountRefunded": 0
  },
  "transactions": [
    {
      "type": "SALE",
      "processorStatus": "CANCELLED",
      "processorName": "STRIPE",
      "processorMerchantId": "acct_stripe_1234",
      "processorTransactionId": "54c4eb5b3ef8a",
      "reason": "Customer cancelled order #1234."
    }
  ],
  "customer": {
    "email": "customer123@gmail.com"
  },
  "metadata": {
    "productId": 123,
    "merchantId": "a13bsd62s"
  }
}

{
  "error": {
    "errorId": "PaymentError",
    "description": "The payment could not be found",
    "diagnosticsId": "1234567898"
  }
}

{
  "error": {
    "errorId": "PaymentRequestLimitExceeded",
    "description": "Payment has exceeded the maximum number of request attempts.",
    "recoverySuggestion": "This payment has many failed requests, which indicates the requests are invalid or the payment is in an unrecoverable state. Retrieve the payment or view it in the dashboard for more details.",
    "diagnosticsId": "1234567898"
  }
}