Buy Now Pay Later (BNPL)

The 2C2P PGW SDK allows merchants to offer Buy Now Pay Later (BNPL) options in their mobile applications.

📘

API Method

PGW SDK API Interface

🚧

References

SDK Payment Classes
SDK Payment Enums

 

1. Generate Payment Token

To prepare a payment token request, refer to the required parameters below.

📘

Payment Token API

Refer to: Payment Token API

{
    "merchantID": "JT04",
    "invoiceNo": "1595219400",
    "description": "2 days 1 night hotel room",
    "amount": 10.0,
    "currencyCode": "THB",
    "nonceStr": "a8092512-b144-41b0-8284-568bb5e9264c",
    "paymentChannel": ["GBNPL"]
}

 

2. Receive Payment Token Response

To receive a payment token response, refer to the sample payment token response below. The response will contain the payment token ID which must be passed to the merchant application.

String paymentToken = "roZG9I1hk/GYjNt+BYPYbxQtKElbZDs9M5cXuEbE+Z0QTr/yUcl1oG7t0AGoOJlBhzeyBtf5mQi1UqGbjC66E85S4m63CfV/awwNbbLbkxsvfgzn0KSv7JzH3gcs/OIL";
val paymentToken = "roZG9I1hk/GYjNt+BYPYbxQtKElbZDs9M5cXuEbE+Z0QTr/yUcl1oG7t0AGoOJlBhzeyBtf5mQi1UqGbjC66E85S4m63CfV/awwNbbLbkxsvfgzn0KSv7JzH3gcs/OIL"
NSString *paymentToken = @"roZG9I1hk/GYjNt+BYPYbxQtKElbZDs9M5cXuEbE+Z0QTr/yUcl1oG7t0AGoOJlBhzeyBtf5mQi1UqGbjC66E85S4m63CfV/awwNbbLbkxsvfgzn0KSv7JzH3gcs/OIL";
let paymentToken: String = "roZG9I1hk/GYjNt+BYPYbxQtKElbZDs9M5cXuEbE+Z0QTr/yUcl1oG7t0AGoOJlBhzeyBtf5mQi1UqGbjC66E85S4m63CfV/awwNbbLbkxsvfgzn0KSv7JzH3gcs/OIL"
String paymentToken = 'roZG9I1hk/GYjNt+BYPYbxQtKElbZDs9M5cXuEbE+Z0QTr/yUcl1oG7t0AGoOJlBhzeyBtf5mQi1UqGbjC66E85S4m63CfV/awwNbbLbkxsvfgzn0KSv7JzH3gcs/OIL';
let paymentToken = 'roZG9I1hk/GYjNt+BYPYbxQtKElbZDs9M5cXuEbE+Z0QTr/yUcl1oG7t0AGoOJlBhzeyBtf5mQi1UqGbjC66E85S4m63CfV/awwNbbLbkxsvfgzn0KSv7JzH3gcs/OIL';

 

3. Prepare Payment Request

To prepare a payment request, refer to the sample code below.

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Payment Request Parameters

Refer to: Payment Request API Parameter

🚧

Payment Channels

To see supported channels for individual BNPL options, refer to: Payment Channel Matrix

PaymentCode paymentCode = new PaymentCode("HOOLAH");
 
PaymentRequest paymentRequest = new BuyNowPayLaterPaymentBuilder(paymentCode)
                                .setName("DavidBilly")
                                .setEmail("[email protected]")
                                .build();
val paymentCode = PaymentCode("HOOLAH")
 
val paymentRequest = BuyNowPayLaterPaymentBuilder(paymentCode).apply {
       name("DavidBilly")
       email("[email protected]")
}.build()
PaymentCode *paymentCode = [[PaymentCode alloc] initWithChannelCode: @"HOOLAH"];
     
PaymentRequest *paymentRequest = [[[[[BuyNowPayLaterPaymentBuilder alloc] initWithPaymentCode: paymentCode]
                                      name: @"DavidBilly"]
                                      email: @"[email protected]"]
                                      build];
let paymentCode: PaymentCode = PaymentCode(channelCode: "HOOLAH")
 
let paymentRequest: PaymentRequest = BuyNowPayLaterPaymentBuilder(paymentCode: paymentCode)
                                     .name("DavidBilly")
                                     .email("[email protected]")
                                     .build()
Map<String, dynamic> paymentCode = {
   'channelCode': 'HOOLAH'
};
 
Map<String, dynamic> paymentRequest = {
   'name': 'DavidBilly',
   'email': '[email protected]'
};
let paymentCode = {
   'channelCode': 'HOOLAH'
};
 
let paymentRequest = {
   'name': 'DavidBilly',
   'email': '[email protected]'
};

 

4. Prepare Transaction Request

To prepare a transaction request, refer to the parameters and sample code below.

📘

Transaction Request API Parameters

Refer to: Do Payment Request API Parameters

TransactionResultRequest transactionResultRequest = new TransactionResultRequestBuilder(paymentToken)
                                                    .with(paymentRequest)
                                                    .build();
val transactionResultRequest = TransactionResultRequestBuilder(paymentToken).apply {
       with(paymentRequest)
}.build()
TransactionResultRequest *transactionResultRequest = [[[[TransactionResultRequestBuilder alloc] initWithPaymentToken: paymentToken]
                                                         withPaymentRequest: paymentRequest]
                                                         build];
let transactionResultRequest: TransactionResultRequest = TransactionResultRequestBuilder(paymentToken: paymentToken)
                                                         .with(paymentRequest)
                                                         .build()
Map<String, dynamic> transactionResultRequest = {
   'paymentToken': paymentToken,
   'payment': {
      'code': {
         ...paymentCode
      },
      'data': {
         ...paymentRequest
      }
   }
};
let transactionResultRequest = {
   'paymentToken': paymentToken,
   'payment': {
      'code': {
         ...paymentCode
      },
      'data': {
         ...paymentRequest
      }
   }
};

5. Receive Transaction Request Response

To receive a transaction request response, refer to the parameters below.

📘

Transaction Response API Parameters

Refer to: Do Payment Response API Parameters

🚧

References

Response Code
To view payment process flows based on response code, refer to: Payment Flow Response Codes

PGWSDK.getInstance().proceedTransaction(transactionResultRequest, new APIResponseCallback<TransactionResultResponse>() {
   
     @Override
     public void onResponse(TransactionResultResponse response) {
   
          if (response.getResponseCode().equals(APIResponseCode.TransactionAuthenticateRedirect) || response.getResponseCode().equals(APIResponseCode.TransactionAuthenticateFullRedirect)) {
   
                String redirectUrl = response.getData(); //Open WebView
          } else if (response.getResponseCode().equals(APIResponseCode.TransactionCompleted)) {
   
               //Inquiry payment result by using invoice no.
          } else {
   
               //Get error response and display error.
          }
     }
   
     @Override
     public void onFailure(Throwable error) {
   
          //Get error response and display error.
     }
});
PGWSDK.getInstance().proceedTransaction(transactionResultRequest, object : APIResponseCallback<TransactionResultResponse> {
 
       override fun onResponse(response: TransactionResultResponse) {
 
              if (response.responseCode == APIResponseCode.TransactionAuthenticateRedirect || response.responseCode == APIResponseCode.TransactionAuthenticateFullRedirect) {
 
                     val redirectUrl = response.data //Open WebView
              } else if (response.responseCode == APIResponseCode.TransactionCompleted) {
 
                     //Inquiry payment result by using invoice no.
              } else {
 
                     //Get error response and display error.
              }
       }
 
       override fun onFailure(error: Throwable) {
 
              //Get error response and display error.
       }
})
[[PGWSDK shared] proceedTransactionWithTransactionResultRequest: transactionResultRequest response: ^(TransactionResultResponse * _Nonnull response) {
             
     if([response.responseCode isEqualToString: APIResponseCode.TransactionAuthenticateRedirect] || [response.responseCode isEqualToString: APIResponseCode.TransactionAuthenticateFullRedirect]) {
                 
          NSString *redirectUrl = response.data; //Open WebView
     } else if([response.responseCode isEqualToString: APIResponseCode.TransactionCompleted]) {
                 
          //Inquiry payment result by using invoice no.
     } else {
                 
          //Get error response and display error.
     }
} failure: ^(NSError * _Nonnull error) {
             
     //Get error response and display error.
}];
PGWSDK.shared.proceedTransaction(transactionResultRequest: transactionResultRequest, { (response: TransactionResultResponse) in
     
     if response.responseCode == APIResponseCode.TransactionAuthenticateRedirect || response.responseCode == APIResponseCode.TransactionAuthenticateFullRedirect {
                  
           let redirectUrl: String = response.data //Open WebView
     } else if response.responseCode == APIResponseCode.TransactionCompleted {
                  
           //Inquiry payment result by using invoice no.
     } else {
                  
           //Get error response and display error.
     }
}) { (error: NSError) in
              
     //Get error response and display error.
}
PGWSDK().proceedTransaction(transactionResultRequest, (response) {
 
   if (response['responseCode'] == APIResponseCode.transactionAuthenticateRedirect || response['responseCode'] == APIResponseCode.transactionAuthenticateFullRedirect) {
 
      String redirectUrl = response['data']; //Open WebView
   } else if (response['responseCode'] == APIResponseCode.transactionCompleted) {
 
      //Inquiry payment result by using invoice no.
   } else {
 
      //Get error response and display error.
   }
}, (error) {
 
   //Get error response and display error.
});
await RTNPGW.proceedTransaction(JSON.stringify(transactionResultRequest)).then((response: string) => {
 
    let transactionResultResponse = JSON.parse(response);
 
    if (transactionResultResponse?.responseCode == APIResponseCode.transactionAuthenticateRedirect || transactionResultResponse?.responseCode == APIResponseCode.transactionAuthenticateFullRedirect) {
 
        let redirectUrl = transactionResultResponse?.data; //Open WebView
    } else if (transactionResultResponse?.responseCode == APIResponseCode.transactionCompleted) {
 
        //Inquiry payment result by using invoice no.
    } else {
 
        //Get error response and display error.
    }
}).catch ((error: Error) => {
 
    //Get error response and display error
});

👍

Callback for PGW Payment Authentication

Refer to: Handle PGW Payment Authentication

 

6. Initiate Transaction Status Inquiry

To retrieve transaction details and status, merchants must initiate the Transaction Status Inquiry API. Refer to the sample code below.

📘

Transaction Status Inquiry API

Refer to: Transaction Status Inquiry API


Full Sample Code

The following sample code demonstrates requests and parameters for each step of the process.

//Step 1: Generate payment token.
String paymentToken = "roZG9I1hk/GYjNt+BYPYbxQtKElbZDs9M5cXuEbE+Z0QTr/yUcl1oG7t0AGoOJlBhzeyBtf5mQi1UqGbjC66E85S4m63CfV/awwNbbLbkxsvfgzn0KSv7JzH3gcs/OIL";
 
//Step 2: Construct buy now pay later request.
PaymentCode paymentCode = new PaymentCode("HOOLAH");
 
PaymentRequest paymentRequest = new BuyNowPayLaterPaymentBuilder(paymentCode)
                                .setName("DavidBilly")
                                .setEmail("[email protected]")
                                .build();
 
//Step 3: Construct transaction request.
TransactionResultRequest transactionResultRequest = new TransactionResultRequestBuilder(paymentToken)
                                                    .with(paymentRequest)
                                                    .build();
 
//Step 4: Execute payment request.
PGWSDK.getInstance().proceedTransaction(transactionResultRequest, new APIResponseCallback<TransactionResultResponse>() {
     
     @Override
     public void onResponse(TransactionResultResponse response) {
     
          if (response.getResponseCode().equals(APIResponseCode.TransactionAuthenticateRedirect) || response.getResponseCode().equals(APIResponseCode.TransactionAuthenticateFullRedirect)) {
     
                String redirectUrl = response.getData(); //Open WebView
          } else if (response.getResponseCode().equals(APIResponseCode.TransactionCompleted)) {
     
               //Inquiry payment result by using invoice no.
          } else {
     
               //Get error response and display error.
          }
     }
     
     @Override
     public void onFailure(Throwable error) {
     
          //Get error response and display error.
     }
});
//Step 1: Generate payment token.
val paymentToken = "roZG9I1hk/GYjNt+BYPYbxQtKElbZDs9M5cXuEbE+Z0QTr/yUcl1oG7t0AGoOJlBhzeyBtf5mQi1UqGbjC66E85S4m63CfV/awwNbbLbkxsvfgzn0KSv7JzH3gcs/OIL"
 
//Step 2: Construct buy now pay later request.
val paymentCode = PaymentCode("HOOLAH")
 
val paymentRequest = BuyNowPayLaterPaymentBuilder(paymentCode).apply {
       name("DavidBilly")
       email("[email protected]")
}.build()
 
//Step 3: Construct transaction request.
val transactionResultRequest = TransactionResultRequestBuilder(paymentToken).apply {
       with(paymentRequest)
}.build()
    
//Step 4: Execute payment request.
PGWSDK.getInstance().proceedTransaction(transactionResultRequest, object : APIResponseCallback<TransactionResultResponse> {
    
       override fun onResponse(response: TransactionResultResponse) {
    
              if (response.responseCode == APIResponseCode.TransactionAuthenticateRedirect || response.responseCode == APIResponseCode.TransactionAuthenticateFullRedirect) {
    
                     val redirectUrl = response.data //Open WebView
              } else if (response.responseCode == APIResponseCode.TransactionCompleted) {
    
                     //Inquiry payment result by using invoice no.
              } else {
    
                     //Get error response and display error.
              }
       }
    
       override fun onFailure(error: Throwable) {
    
              //Get error response and display error.
       }
})
//Step 1: Generate payment token.
NSString *paymentToken = @"roZG9I1hk/GYjNt+BYPYbxQtKElbZDs9M5cXuEbE+Z0QTr/yUcl1oG7t0AGoOJlBhzeyBtf5mQi1UqGbjC66E85S4m63CfV/awwNbbLbkxsvfgzn0KSv7JzH3gcs/OIL";
 
//Step 2: Construct buy now pay later request.
PaymentCode *paymentCode = [[PaymentCode alloc] initWithChannelCode: @"HOOLAH"];
     
PaymentRequest *paymentRequest = [[[[[BuyNowPayLaterPaymentBuilder alloc] initWithPaymentCode: paymentCode]
                                      name: @"DavidBilly"]
                                      email: @"[email protected]"]
                                      build];
 
//Step 3: Construct transaction request.
TransactionResultRequest *transactionResultRequest = [[[[TransactionResultRequestBuilder alloc] initWithPaymentToken: paymentToken]
                                                         withPaymentRequest: paymentRequest]
                                                         build];
 
//Step 4: Execute payment request.
[[PGWSDK shared] proceedTransactionWithTransactionResultRequest: transactionResultRequest response: ^(TransactionResultResponse * _Nonnull response) {
               
     if([response.responseCode isEqualToString: APIResponseCode.TransactionAuthenticateRedirect] || [response.responseCode isEqualToString: APIResponseCode.TransactionAuthenticateFullRedirect]) {
                   
          NSString *redirectUrl = response.data; //Open WebView
     } else if([response.responseCode isEqualToString: APIResponseCode.TransactionCompleted]) {
                   
          //Inquiry payment result by using invoice no.
     } else {
                   
          //Get error response and display error.
     }
} failure: ^(NSError * _Nonnull error) {
               
     //Get error response and display error.
}];
//Step 1: Generate payment token.
let paymentToken: String = "roZG9I1hk/GYjNt+BYPYbxQtKElbZDs9M5cXuEbE+Z0QTr/yUcl1oG7t0AGoOJlBhzeyBtf5mQi1UqGbjC66E85S4m63CfV/awwNbbLbkxsvfgzn0KSv7JzH3gcs/OIL"
    
//Step 2: Construct buy now pay later request.
let paymentCode: PaymentCode = PaymentCode(channelCode: "HOOLAH")
 
let paymentRequest: PaymentRequest = BuyNowPayLaterPaymentBuilder(paymentCode: paymentCode)
                                     .name("DavidBilly")
                                     .email("[email protected]")
                                     .build()
 
//Step 3: Construct transaction request.
let transactionResultRequest: TransactionResultRequest = TransactionResultRequestBuilder(paymentToken: paymentToken)
                                                         .with(paymentRequest)
                                                         .build()
 
//Step 4: Execute payment request.
PGWSDK.shared.proceedTransaction(transactionResultRequest: transactionResultRequest, { (response: TransactionResultResponse) in
       
     if response.responseCode == APIResponseCode.TransactionAuthenticateRedirect || response.responseCode == APIResponseCode.TransactionAuthenticateFullRedirect {
                    
           let redirectUrl: String = response.data //Open WebView
     } else if response.responseCode == APIResponseCode.TransactionCompleted {
                    
           //Inquiry payment result by using invoice no.
     } else {
                    
           //Get error response and display error.
     }
}) { (error: NSError) in
                
     //Get error response and display error.
}
//Step 1: Generate payment token.
String paymentToken = 'roZG9I1hk/GYjNt+BYPYbxQtKElbZDs9M5cXuEbE+Z0QTr/yUcl1oG7t0AGoOJlBhzeyBtf5mQi1UqGbjC66E85S4m63CfV/awwNbbLbkxsvfgzn0KSv7JzH3gcs/OIL';
 
//Step 2: Construct buy now pay later request.
Map<String, dynamic> paymentCode = {
   'channelCode': 'HOOLAH'
};
 
Map<String, dynamic> paymentRequest = {
   'name': 'DavidBilly',
   'email': '[email protected]'
};
 
//Step 3: Construct transaction request.
Map<String, dynamic> transactionResultRequest = {
   'paymentToken': paymentToken,
   'payment': {
      'code': {
        ...paymentCode
      },
      'data': {
        ...paymentRequest
      }
   }
};
 
//Step 4: Execute payment request.
PGWSDK().proceedTransaction(transactionResultRequest, (response) {
 
   if (response['responseCode'] == APIResponseCode.transactionAuthenticateRedirect || response['responseCode'] == APIResponseCode.transactionAuthenticateFullRedirect) {
 
       String redirectUrl = response['data']; //Open WebView
   } else if (response['responseCode'] == APIResponseCode.transactionCompleted) {
 
       //Inquiry payment result by using invoice no.
   } else {
 
       //Get error response and display error.
   }
}, (error) {
 
    //Get error response and display error.
});
//Step 1: Generate payment token.
let paymentToken = 'roZG9I1hk/GYjNt+BYPYbxQtKElbZDs9M5cXuEbE+Z0QTr/yUcl1oG7t0AGoOJlBhzeyBtf5mQi1UqGbjC66E85S4m63CfV/awwNbbLbkxsvfgzn0KSv7JzH3gcs/OIL';

//Step 2: Construct buy now pay later request.
let paymentCode = {
   'channelCode': 'HOOLAH'
};
 
let paymentRequest = {
   'name': 'DavidBilly',
   'email': '[email protected]'
};
 
//Step 3: Construct transaction request.
let transactionResultRequest = {
   'paymentToken': paymentToken,
   'payment': {
      'code': {
        ...paymentCode
      },
      'data': {
        ...paymentRequest
      }
   }
};
   
//Step 4: Execute payment request.
await RTNPGW.proceedTransaction(JSON.stringify(transactionResultRequest)).then((response: string) => {
    
    let transactionResultResponse = JSON.parse(response);
    
    if (transactionResultResponse?.responseCode == APIResponseCode.transactionAuthenticateRedirect || transactionResultResponse?.responseCode == APIResponseCode.transactionAuthenticateFullRedirect) {
    
        let redirectUrl = transactionResultResponse?.data; //Open WebView
    } else if (transactionResultResponse?.responseCode == APIResponseCode.transactionCompleted) {
    
        //Inquiry payment result by using invoice no.
    } else {
    
        //Get error response and display error.
    }
}).catch ((error: Error) => {
    
    //Get error response and display error
});