OPay Cancel Payment
You can cancel an unpaid cashier payment using our Cancel Payment API.
Cancel Payment API
you can cancel an unpaid transaction by using the Cancel Payment API. Note that, if the payment has been already
done by your client, you need to call Refund Payment API to refund the payment
to your client.
For calling the API using the POST method you can use these endpoints URL:
-In case you are still in the developing phase, use the following staging API endpoint URL
https://testapi.opaycheckout.com/api/v1/international/payment/close
-Once you have a fully tested payment flow and you are ready for production, Use the following production API endpoint URL instead
https://liveapi.opaycheckout.com/api/v1/international/payment/close
-Request Parameters:
- Header: Bearer Signature and merchant ID
- Json object containing the transaction information:
Authorization: Bearer {signature}
MerchantId : 256612345678901
{
"reference": "65316571001",
"country": "NG"
}
HTTP POST Parameters
-Here is a detailed description for the parameters you need to complete the POST request:
-An example call of cancel payment API is as follows :
class CashierCloseController
{
private $secretkey;
private $merchantId;
private $url;
public function __construct() {
$this->merchantId = '281821110129700';
$this->secretkey = 'OPAYPRV*******0187828';
$this->url = 'https://testapi.opaycheckout.com/api/v1/international/payment/close';
}
public function test(){
$data = [
'country' => 'NG',
'reference' => '041233981115'
]
;
$data2 = (string) json_encode($data,JSON_UNESCAPED_SLASHES);
$auth = $this->auth($data2);
$header = ['Content-Type:application/json', 'Authorization:Bearer '. $auth, 'MerchantId:'.$this->merchantId];
$response = $this->http_post($this->url, $header, json_encode($data));
$result = $response?$response:null;
return $result;
}
private function http_post ($url, $header, $data) {
if (!function_exists('curl_init')) {
throw new Exception('php not found curl', 500);
}
$ch = curl_init();
curl_setopt($ch, CURLOPT_TIMEOUT, 60);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
$response = curl_exec($ch);
$httpStatusCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
$error=curl_error($ch);
curl_close($ch);
if (200 != $httpStatusCode) {
print_r("invalid httpstatus:{$httpStatusCode} ,response:$response,detail_error:" . $error, $httpStatusCode);
}
return $response;
}
public function auth ( $data ) {
$secretKey = $this->secretkey;
$auth = hash_hmac('sha512', $data, $secretKey);
return $auth;
}
}
# importing the requests library
import requests
# CashierAPI Endpoint
URL = "https://testapi.opaycheckout.com/api/v1/international/payment/close"
# defining a params dict for the parameters to be sent to the API
PaymentData = {
'reference' : '1001000',
'country' : 'NG'
}
# Prepare Headers
headers = {
'Content-Type' : 'application/json',
'Accept' : 'application/json',
'Authorization': '{signature}',
'MerchantId' : '256612345678901'
}
# sending post request and saving the response as response object
status_request = requests.post(url = URL, params = json.dumps(PaymentData))
# extracting data in json format
status_response = status_request.json()
const request = require('request');
var sha512 = require('js-sha512');
const formData = {
"country": "NG",
"reference": "041233981112"
};
var privateKey = "OPAYPRV*******0187828"
var hash = sha512.hmac.create(privateKey);
hash.update(JSON.stringify(formData));
hmacsignature = hash.hex();
console.log(hmacsignature)
request({
url: 'https://testapi.opaycheckout.com/api/v1/international/payment/close',
method: 'POST',
headers: {
'MerchantId': '256621051120756',
'Authorization': 'Bearer '+hmacsignature
},
json: true,
body: formData
}, function (error, response, body) {
console.log('body: ')
console.log(body)
}
)
curl --location --request POST 'https://testapi.opaycheckout.com/api/v1/international/payment/close' \
--header 'MerchantId: 256621051120756' \
--header 'Authorization: Bearer 38017496e*******2ab0297d1de8905cb7d85a043d9084254e61a8da6093b6f155550ff51891dca9f9889a' \
--header 'Content-Type: application/json' \
--data-raw '{
"country": "NG",
"reference": "041233989103331"
}'
import com.google.gson.Gson;
import org.apache.commons.codec.binary.Hex;
import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.util.TreeMap;
public class CashierClose {
private static final String privateKey = "OPAYPRV*******0187828";
private static final String endpoint = "https://testapi.opaycheckout.com";
private static final String merchantId = "256621051120756";
public static void main(String[] args) throws Exception {
String addr = endpoint + "/api/v1/international/payment/close";
Gson gson = new Gson();
TreeMap order = new TreeMap<>();
order.put("reference", "5de98ea1-9e99-4019-b389-d476f85d6ea2");
order.put("country", "NG");
String requestBody = gson.toJson(order);
System.out.println("--request:");
System.out.println(requestBody);
String oPaySignature = hmacSHA512(requestBody, privateKey);
System.out.println("--signature:");
System.out.println(oPaySignature);
URL url = new URL(addr);
HttpURLConnection con = (HttpURLConnection)url.openConnection();
con.setRequestMethod("POST");
con.setRequestProperty("Content-Type", "application/json; utf-8");
con.setRequestProperty("Authorization", "Bearer "+oPaySignature);
con.setRequestProperty("MerchantId", merchantId);
con.setDoOutput(true);
OutputStream os = con.getOutputStream();
byte[] input = requestBody.getBytes(StandardCharsets.UTF_8);
os.write(input, 0, input.length);
BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream(), StandardCharsets.UTF_8));
StringBuilder response = new StringBuilder();
String responseLine = null;
while ((responseLine = br.readLine()) != null) {
response.append(responseLine.trim());
}
System.out.println("--response:");
System.out.println(response.toString());
//close your stream and connection
}
public static String hmacSHA512(final String data, final String secureKey) throws Exception{
byte[] bytesKey = secureKey.getBytes();
final SecretKeySpec secretKey = new SecretKeySpec(bytesKey, "HmacSHA512");
Mac mac = Mac.getInstance("HmacSHA512");
mac.init(secretKey);
final byte[] macData = mac.doFinal(data.getBytes());
byte[] hex = new Hex().encode(macData);
return new String(hex, StandardCharsets.UTF_8);
}
}
using System;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using Newtonsoft.Json;
namespace OPayRequest
{
public class Program
{
static void Main(string[] args)
{
PostJson("https://testapi.opaycheckout.com/api/v1/international/payment/close", new opay_request
{
reference = '12312321324',
country = 'NG'
});
}
private static void PostJson(string uri, opay_request postParameters)
{
string postData = JsonConvert.SerializeObject(postParameters);
byte[] bytes = Encoding.UTF8.GetBytes(postData);
var httpWebRequest = (HttpWebRequest) WebRequest.Create(uri);
httpWebRequest.Method = "POST";
httpWebRequest.ContentLength = bytes.Length;
httpWebRequest.ContentType = "text/json";
using (Stream requestStream = httpWebRequest.GetRequestStream())
{
requestStream.Write(bytes, 0, bytes.Count());
}
var httpWebResponse = (HttpWebResponse) httpWebRequest.GetResponse();
if (httpWebResponse.StatusCode != HttpStatusCode.OK)
{
string message = String.Format("GET failed. Received HTTP {0}", httpWebResponse.StatusCode);
throw new ApplicationException(message);
}
}
}
public class opay_request
{
public string reference { get; set; }
public string orderNo { get; set; }
}
}
Note
Header must contain the "Signature" , "MerchantId"
Signature is calculated using SHA-512 HMAC signed with your Private Key. See API Calls Signature section for more details.
Cancel Payment Response
-Response Parameters:
the parameters contained in the response received whenever you call the Transaction Create API as a JSON Object.
{
"code": "00000",
"message": "SUCCESSFUL",
"data": {
"reference": "56215641",
"orderNo": "211018140366538753",
"country": "NG",
"amount": {
"total": 400,
"currency": "NGN"
},
"orderStatus": "CLOSE"
}
-Here is a detailed description for the parameters received in the response:
| Parameter | type | Description | example | |
|---|---|---|---|---|
| reference | String |
Unique Merchant's payment order number. | 1001000 | |
| orderNo | String |
Unique Opay's payment order number. | 211009140896593010 | |
| country | String |
Country Code. | NG | |
| orderStatus | enum |
[INITIAL, PENDING, SUCCESS, FAIL, CLOSE] | CLOSE |
|
| amount | ||||
| total | Integer |
amount(cent unit). | 400 | |
| currency | String |
currency type.See full list here | NGN | |
Error Handling
After submitting an API call to OPay, you receive a response back to inform you that
your request was received and processed. A successful OPay API should return a status code 00,
meanwhile, in a situation where any payment processing error occurred, you will receive an error code with a
message to describe the reason of the error. A sample error response can be found below.
{
"code": "02006",
"message": "payment not found."
}
Depending on the HTTP status code of the response, you should build some logic to handle any errors that a request or the system may return. A list of possible potential error codes that you may receive can be found below.
| Error Code | Error Message |
|---|---|
| 02000 | authentication failed. |
| 02001 | request params not valid. |
| 02006 | not found. |
| 02002 | merchant not configured with this function. |
| 02007 | merchant not available. |
| 50003 | service not available, please try again. |
