Promptpay

Interaction diagram

Payment processing by using the Promptpay payment method requires merchant's web service, one of Monetix interfaces, and the Monetix payment platform, as well as provider technical facilities.

Operations support

	Interfaces			Amounts, THB *		Times
	Payment Page	Gate	Dashboard	minimum	maximum	basic	threshold
Purchases				*	*	within 20 minutes	***

* For the information about the amount limits, contact your Monetix key account manager.

You can check the payment amount limits in your project by using Dashboard. To check your payment amount limits, go to Dashboard, select the Projects section and click the Payment methods tab.

Processing scenarios

Purchase processing by using the Promptpay method can be performed with or without redirection of the customer to the provider service.

General information

In the Promptpay method, when processing a purchase by using Payment Page, the merchant web service should send a request with all the required parameters and signature to the Monetix URL and get the callback with the payment result from the payment platform. When opening Payment Page, you can have Payment Page opened with the Promptpay method selected. For more information about preselecting payment methods, see in Preselecting payment methods. The full sequence and particularities of the purchase process are provided below.

The sections that follow discuss in more details the request format and the Payment Page parameters to use in the Promptpay payment method and provide the information on the format of callbacks with payment results. For the general information on how to use the API, see Payment Page API Description.

Request format

There are several things you need to consider when using the Promptpay method:

1. You must provide values for the basic minimum of parameters. Listed below are the parameters that are required for any payment method:
   • project_id—project ID you obtained from Monetix
   • payment_id—payment ID unique within the project
   • customer_id—the unique ID of the customer within your project
   • customer_email—customer email
   • customer_first_name—customer first name
   • customer_last_name—customer last name
   • payment_currency—payment currency in ISO-4217 alpha-3 format
   • payment_amount—payment amount in minor currency units without any decimal point or comma except for cases where the currency does not have any minor currency units. If the currency has no minor units (that is, the number of digits for minor currency units is zero), then you must set this parameter to the amount in the major currency units. For the information on whether the currency has any minor units, see Currency codes.
2. The currency of payment can only be THB.
3. If you need to have payment form displayed with the Promptpay method selected, set the force_payment_method parameter to promptpay.
4. If required, you can also add any other additional parameters Payment Page supports.
5. After you specify all the parameters you need, you must create the signature for the request. For instructions on how to sign a payment request, see Signature generation and verification.

Here is an example of data from a request for Payment Page opening:

EPayWidget.run(
    {
        project_id: 1234,
        payment_id: 'payment_47',
        customer_id: 'customer_123',
        customer_first_name: 'John',
        customer_last_name: 'Doe',
        customer_email: 'johndoe@example.com',
        payment_currency: 'THB',
        payment_amount: 1000,    
        signature: "kUi2x9dKHAVNU0FYldJrxh4yo+52Kt8KU+Y19vySO\/RLUkDJrOcZzUCwX6R\/ekpZhkIQg=="
    }
)

For information about all parameters available in the Promptpay method, see Payment Page invocation parameters.

Callback format

The Promptpay method uses the standard format for callbacks to deliver purchase results. For more information, see Callbacks in Payment Page.

The following is the example of a callback with an information about successful 1000.00 THB purchase made by the 123 customer in the 382 project.

{
        "project_id": 382,
        "payment": {
            "type": "purchase",
            "sum": {
                "amount": 100000,
                "currency": "THB"
            },
            "status": "success",
            "method": "promptpay",
            "id": "cfaf576641101077ec3440ffaf476a9d",
            "date": "2020-09-07T12:44:54+0000"
        },
        "customer": {
            "id": "123"
        },
        "operation": {
            "type": "sale",
            "sum_initial": {
                "currency": "THB",
                "amount": 100000
            },
            "sum_converted": {
                "currency": "THB",
                "amount": 100000
            },
            "status": "success",
            "request_id": "057cdba3b2b54b994a5f9c3c4080ff...fdec3b0b0be6b-00089013",
            "provider": {
                "payment_id": "079253339",
                "id": 3351,
                "date": "2020-09-07T04:44:52+0000"
            },
            "message": "Success",
            "id": 89012010009801,
            "date": "2020-09-07T12:44:54+0000",
            "created_date": "2020-09-07T12:42:17+0000",
            "code": "0"
        },
        "signature": "mwiKFBdPKMUEmDieNYeJ...w0R0GGfIBVExvubTbimclPgfx2/CY8Yq+g=="
    }
}

The following is the example of a callback for a declined purchase.

{
        "project_id": 383,
        "payment": {
            "type": "purchase",
            "sum": {
                "amount": 185384,
                "currency": "THB"
            },
            "status": "decline",
            "method": "promptpay",
            "id": "bde45cdea1ac5c4a75e2d04689a06ad4",
            "date": "2020-09-07T11:01:34+0000"
        },
        "customer": {
            "id": "456"
        },
        "operation": {
            "type": "sale",
            "sum_initial": {
                "currency": "THB",
                "amount": 185384
            },
            "sum_converted": {
                "currency": "THB",
                "amount": 185384
            },
            "status": "decline",
            "request_id": "c7d5631fdd81a4394e85d82...eb70af0e207f1a133-00085510",
            "provider": {
                "payment_id": "079243093",
                "id": 3351,
                "date": "2020-09-07T03:01:32+0000"
            },
            "message": "General decline",
            "id": 85509010009741,
            "date": "2020-09-07T11:01:34+0000",
            "created_date": "2020-09-07T10:09:31+0000",
            "code": "20000"
        },
        "signature": "FEPNq/ijls1WTCdNdz8FD1bM6kWe04AO...Lri/KEHcn/ihMSmzv/cNmQ=="
    }
}

Related topics

The following topics might be useful when implementing payments by using Payment Page:

• Integration procedure
• Signature generation and verification
• Payment types, operations and payments
• Operation statuses and response codes

General information

To process a purchase through Payment Page by using the Promptpay method, the merchant web service needs to send a request with all the required parameters and signature to the Monetix URL and receive a callback with the payment result from the payment platform. The Promptpay method can also be set as preselected payment method when Payment Page opens. For more information about preselecting payment methods, see the Preselecting payment methods section. The full sequence and special aspects of the purchase processing are provided below.

The following sections provide the detailed information about the request format and the Payment Page parameters to use in the Promptpay payment method and provide the information on the format of callbacks with payment results. For the general information on how to use the API, see Payment Page API Description.

Request format

There are several things you need to consider when using the Promptpay method:

1. You must provide values for the basic minimum of parameters. Listed below are the parameters that are required for any payment method:
   • project_id—project ID you obtained from Monetix
   • payment_id—payment ID unique within the project
   • customer_id—the unique ID of the customer within your project
   • customer_email—customer email
   • customer_first_name—customer first name
   • customer_last_name—customer last name
   • payment_currency—payment currency in ISO-4217 alpha-3 format
   • payment_amount—payment amount in minor currency units without any decimal point or comma except for cases where the currency does not have any minor currency units. If the currency has no minor units (that is, the number of digits for minor currency units is zero), then you must set this parameter to the amount in the major currency units. For the information on whether the currency has any minor units, see Currency codes.
2. The currency of payment can only be THB.
3. If you need the payment form to open with the Payment Page method as preselected payment method, set the force_payment_method parameter to promptpay.
4. If required, you can also add any other additional parameters Payment Page supports. All parameters available for payment processing by using the Promptpay method are provided in the Payment Page invocation parameters section.
5. After you specify all the parameters you need, you must create the signature for the request. For instructions on how to sign a payment request, see Signature generation and verification.

Here is an example of data from a request for Payment Page opening:

EPayWidget.run(
    {
        project_id: 1234,
        payment_id: 'payment_47',
        customer_id: 'customer_123',
        customer_first_name: 'John',
        customer_last_name: 'Doe',
        customer_email: 'johndoe@example.com',
        payment_currency: 'THB',
        payment_amount: 1000,    
        signature: "kUi2x9dKHAVNU0FYldJrxh4yo+52Kt8KU+Y19vySO\/RLUkDJrOcZzUCwX6R\/ekpZhkIQg=="
    }
)

Callback format

The Promptpay method uses the standard format for callbacks to deliver purchase results. For more information, see Callbacks in Payment Page.

The following is the example of a callback with an information about successful 1000.00 THB purchase made by the 123 customer in the 456 project.

{
        "project_id": 456,
        "payment": {
            "id": "125",
            "type": "purchase",
            "status": "success",
            "date": "2021-02-15T10:34:21+0000",
            "method": "promptpay",
            "sum": {
                "amount": 100000,
                "currency": "THB"
            },
            "description": ""
        },
        "customer": {
            "id": "123"
        },
        "operation": {
            "id": 76,
            "type": "sale",
            "status": "success",
            "date": "2021-02-15T10:34:21+0000",
            "created_date": "2021-02-15T10:33:59+0000",
            "request_id": "a8ee115e2c7f2f9cd69a743f...c161bf1fcde0-00000001",
            "sum_initial": {
                "amount": 100000,
                "currency": "THB"
            },
            "sum_converted": {
                "amount": 100000,
                "currency": "THB"
            },
            "code": "0",
            "message": "Success",
            "provider": {
                "id": 4821,
                "payment_id": "0123456789",
                "auth_code": "",
                "date": "2021-02-15T10:34:13+0000"
            }
        },
        "signature": "+II2IHZ3IjQcqVsIZ9oYb...atXOn2Czyo7L8g9NN1+WVtR+MGQ=="
    }
}

The following is the example of a callback for a declined purchase.

{
        "project_id": 321,
        "payment": {
            "id": "ABC456",
            "type": "purchase",
            "status": "decline",
            "date": "2021-03-11T14:01:41+0000",
            "method": "promptpay",
            "sum": {
                "amount": 100000,
                "currency": "THB"
            },
            "description": ""
        },
        "operation": {
            "id": 123456789,
            "type": "sale",
            "status": "decline",
            "date": "2021-03-11T14:01:41+0000",
            "created_date": "2021-03-11T07:07:18+0000",
            "request_id": "09916aa29732a5e59890c409adaa1fd671...ca33-00088600",
            "sum_initial": {
                "amount": 100000,
                "currency": "THB"
            },
            "sum_converted": {
                "amount": 100000,
                "currency": "THB"
            },
            "code": "20000",
            "message": "General decline",
            "provider": {
                "id": 4821,
                "payment_id": "",
                "auth_code": ""
            }
        },
        "signature": "Lk+5aUd6Hp3lR6ZRPXXA0vJ78tdwOrY80kTp...2f1ilyK1bkNrYw=="
    }
}

Related topics

The following topics might be useful when implementing payments by using Payment Page:

• Integration procedure
• Signature generation and verification
• Payment types, operations and payments
• Operation statuses and response codes

General information

In the Promptpay method, when processing a purchase by using Gate, the merchant web service is required to do the following:

1. Send a request with all the required parameters and signature to the Monetix URL.
2. Perform the redirection of a customer to the provider service.
3. Get the callback with the payment result from the payment platform.

The following diagram provides the detailed picture of the payment processing procedure.

The sections that follow discuss in more details the request format and the Gate parameters to use in the Promptpay payment method and provide the information on the format of callbacks with purchase results.

Request format

1. You send purchase requests by sending the request to /v2/payment/banks/promptpay/sale by using the POST (HTTP) method. This request belongs to the following request group /v2/payment/banks/{payment_method}/sale.
2. The following objects and parameters must be specified in any request:
   • general—object with general request identification information:
     • project_id—the project ID you obtained from Monetix
     • payment_id—payment ID unique within the project
     • signature—signature created after you specify all the required parameters. For more information about signature generation, see Signature generation and verification.
   • customer—object with customer information:
     • id—the unique ID of the customer within your project
     • ip_address—IP address of the customer's device
     • email—customer email
     • first_name—customer first name
     • last_name—customer last name
   • payment—object with purchase information:
     • amount—purchase amount in minor currency units without any decimal point or comma except for cases where the currency does not have any minor currency units. If the currency has no minor units (that is, the number of digits for minor currency units is zero), then you must set this parameter to the amount in the major currency units. For the information on whether the currency has any minor units, see Currency codes.
     • currency—code of purchase currency in the ISO-4217 alpha-3 format
   • return_url—object with the information where to redirect the customer to when the payment is completed:
     • success—the URL to redirect the customer to after the payment is successfully completed.
3. The following parameters with the return URLs are optional, but we strongly advise you to specify them in the request to provide your customer a better user experience.
   • return_url—object with the information where to redirect the customer to when the payment is completed or prematurely terminated by the customer:
     • decline—the URL to redirect the customer to after the payment is declined.
     • return—the URL to redirect the customer to when they prematurely terminate the payment. This URL is also used if the decline parameter is not specified in the request.
4. The currency of purchase can only be THB.
5. If required, you can also add any other additional parameters Gate supports.

Here is an example of data from a purchase request in the Promptpay method.

{
    "general": {
        "project_id": 1234,
        "payment_id": "payment_47",
        "signature": "PJkV8ej\/UG0Di8hTng6JvC7vQsaC6tajQVVfBaNIipTv+AWoXW\/9MTO8yJA=="
    },
    "customer": {
        "id": "customer_123",
        "ip_address": "198.51.100.47",
        "first_name": "John",
        "last_name": "Doe",
        "email": "johndoe@example.com"
    },
    "payment": {
        "amount": 10000,
        "currency": "THB"
    },
    "return_url": {
        "success": "https://example.com/success/",
        "decline": "https://example.com/decline/",
        "return": "https://example.com/return/"
    }
}

Format of customer redirection data

After receiving and processing your purchase request, the payment platform sends a callback to your web service containing the data to redirect the customer to the provider service.

To redirect the customer, use the values of the following parameters in the redirect_data object:

• url—the URL to redirect the customer to
• body—the data to be sent in the request body
• method—the HTTP method to get an HTML page of the website (for example, POST or GET)
• encrypted—this is the service parameter. Ignore the data it contains.

Here is an example of a piece of callback containing the data to redirect the customer.

"redirect_data": {
    "method": "POST",
    "body": {
        "example_parameter_1": "value_1",
        "example_parameter_2": "value_2"
    },
    "encrypted": [],
    "url": "https://example.com/redirect"
}

Callback format

The Promptpay method uses the standard format for callbacks to deliver purchase results. For more information, see Callbacks in Gate.

The following is the example of a callback with an information about successful 1000.00 THB purchase made by the 123 customer in the 382 project.

{
        "project_id": 382,
        "payment": {
            "type": "purchase",
            "sum": {
                "amount": 100000,
                "currency": "THB"
            },
            "status": "success",
            "method": "promptpay",
            "id": "cfaf576641101077ec3440ffaf476a9d",
            "date": "2020-09-07T12:44:54+0000"
        },
        "customer": {
            "id": "123"
        },
        "operation": {
            "type": "sale",
            "sum_initial": {
                "currency": "THB",
                "amount": 100000
            },
            "sum_converted": {
                "currency": "THB",
                "amount": 100000
            },
            "status": "success",
            "request_id": "057cdba3b2b54b994a5f9c3c4080ff...fdec3b0b0be6b-00089013",
            "provider": {
                "payment_id": "079253339",
                "id": 3351,
                "date": "2020-09-07T04:44:52+0000"
            },
            "message": "Success",
            "id": 89012010009801,
            "date": "2020-09-07T12:44:54+0000",
            "created_date": "2020-09-07T12:42:17+0000",
            "code": "0"
        },
        "signature": "mwiKFBdPKMUEmDieNYeJ...w0R0GGfIBVExvubTbimclPgfx2/CY8Yq+g=="
    }
}

The following is the example of a callback for a declined purchase.

{
        "project_id": 383,
        "payment": {
            "type": "purchase",
            "sum": {
                "amount": 185384,
                "currency": "THB"
            },
            "status": "decline",
            "method": "promptpay",
            "id": "bde45cdea1ac5c4a75e2d04689a06ad4",
            "date": "2020-09-07T11:01:34+0000"
        },
        "customer": {
            "id": "456"
        },
        "operation": {
            "type": "sale",
            "sum_initial": {
                "currency": "THB",
                "amount": 185384
            },
            "sum_converted": {
                "currency": "THB",
                "amount": 185384
            },
            "status": "decline",
            "request_id": "c7d5631fdd81a4394e85d82...eb70af0e207f1a133-00085510",
            "provider": {
                "payment_id": "079243093",
                "id": 3351,
                "date": "2020-09-07T03:01:32+0000"
            },
            "message": "General decline",
            "id": 85509010009741,
            "date": "2020-09-07T11:01:34+0000",
            "created_date": "2020-09-07T10:09:31+0000",
            "code": "20000"
        },
        "signature": "FEPNq/ijls1WTCdNdz8FD1bM6kWe04AO...Lri/KEHcn/ihMSmzv/cNmQ=="
    }
}

Related topics

The following topics might be useful when implementing payments through Gate:

• Integration procedure
• Signature generation and verification
• Payment types, operations and payments
• Operation statuses and response codes

General information

In the Promptpay methods, when processing a purchase by using Gate, the merchant web service is required to do the following:

1. Send a request with all the required parameters and signature to the Monetix URL.
2. Display the payment instructions to the customer.
3. Get the callback with the payment result from the payment platform.

The following diagram provides the detailed picture of the payment processing procedure.

The sections that follow discuss in more details the request format and the Gate parameters to use in the Promptpay payment method and provide the information on the format of callbacks with purchase results.

Request format

1. You send purchase requests by sending the request to /v2/payment/banks/promptpay/sale by using the POST (HTTP) method. This request belongs to the following request group /v2/payment/banks/{payment_method}/sale.
2. The following objects and parameters must be specified in any request:
   • general—object with general request identification information:
     • project_id—the project ID you obtained from Monetix
     • payment_id—payment ID unique within the project
     • signature—signature created after you specify all the required parameters. For more information about signature generation, see Signature generation and verification.
   • customer—object with customer information:
     • id—the unique ID of the customer within your project
     • ip_address—IP address of the customer's device
     • email—customer email
     • first_name—customer first name
     • last_name—customer last name
   • payment—object with purchase information:
     • amount—purchase amount in minor currency units without any decimal point or comma except for cases where the currency does not have any minor currency units. If the currency has no minor units (that is, the number of digits for minor currency units is zero), then you must set this parameter to the amount in the major currency units. For the information on whether the currency has any minor units, see Currency codes.
     • currency—code of purchase currency in the ISO-4217 alpha-3 format
3. The currency of purchase can only be THB.
4. If required, you can also add any other additional parameters Gate supports.

Here is an example of data from a purchase request in the Promptpay method.

{
    "general": {
        "project_id": 1234,
        "payment_id": "payment_47",
        "signature": "PJkV8ej\/UG0Di8hTng6JvC7vQsaC6tajQVVfBaNIipTv+AWoXW\/9MTO8yJA=="
    },
    "customer": {
        "id": "customer_123",
        "ip_address": "198.51.100.47",
        "first_name": "John",
        "last_name": "Doe",
        "email": "johndoe@example.com"
    },
    "payment": {
        "amount": 10000,
        "currency": "THB"
    }
}

Formats of data for displaying the payment instructions

To display the payment instructions to the customer, you must receive and process a callback from the payment platform containing the payment data in the in the display_data array and display the customer the payment instructions to the customer.

The array display_data contains the following parameters:

• type—data type (the value is always qr_img)
• title—title of the data which needs to be displayed to the customer (the value is always QR code)
• data—string which contains the coded image of the QR code. The QR code is generated in compliance with the ISO 18004:2006 standard.

The following is the callback fragment containing the payment data.

"display_data": [
            {
                "type": "qr_img",
                "title": "QR code",
                "data": "0001101021230620016A000000677010112011505...764540510.005802TH6304XXXX"
            }
]

Callback format

The Promptpay method uses the standard format for callbacks to deliver purchase results. For more information, see Callbacks in Gate.

The following is the example of a callback with an information about successful 1000.00 THB purchase made by the 123 customer in the 456 project.

{
        "project_id": 456,
        "payment": {
            "id": "125",
            "type": "purchase",
            "status": "success",
            "date": "2021-02-15T10:34:21+0000",
            "method": "promptpay",
            "sum": {
                "amount": 100000,
                "currency": "THB"
            },
            "description": ""
        },
        "customer": {
            "id": "123"
        },
        "operation": {
            "id": 76,
            "type": "sale",
            "status": "success",
            "date": "2021-02-15T10:34:21+0000",
            "created_date": "2021-02-15T10:33:59+0000",
            "request_id": "a8ee115e2c7f2f9cd69a743f...c161bf1fcde0-00000001",
            "sum_initial": {
                "amount": 100000,
                "currency": "THB"
            },
            "sum_converted": {
                "amount": 100000,
                "currency": "THB"
            },
            "code": "0",
            "message": "Success",
            "provider": {
                "id": 4821,
                "payment_id": "0123456789",
                "auth_code": "",
                "date": "2021-02-15T10:34:13+0000"
            }
        },
        "signature": "+II2IHZ3IjQcqVsIZ9oYb...atXOn2Czyo7L8g9NN1+WVtR+MGQ=="
    }
}

The following is the example of a callback for a declined purchase.

{
        "project_id": 321,
        "payment": {
            "id": "ABC456",
            "type": "purchase",
            "status": "decline",
            "date": "2021-03-11T14:01:41+0000",
            "method": "promptpay",
            "sum": {
                "amount": 100000,
                "currency": "THB"
            },
            "description": ""
        },
        "operation": {
            "id": 123456789,
            "type": "sale",
            "status": "decline",
            "date": "2021-03-11T14:01:41+0000",
            "created_date": "2021-03-11T07:07:18+0000",
            "request_id": "09916aa29732a5e59890c409adaa1fd671...ca33-00088600",
            "sum_initial": {
                "amount": 100000,
                "currency": "THB"
            },
            "sum_converted": {
                "amount": 100000,
                "currency": "THB"
            },
            "code": "20000",
            "message": "General decline",
            "provider": {
                "id": 4821,
                "payment_id": "",
                "auth_code": ""
            }
        },
        "signature": "Lk+5aUd6Hp3lR6ZRPXXA0vJ78tdwOrY80kTp...2f1ilyK1bkNrYw=="
    }
}

Related topics

The following topics might be useful when implementing payments through Gate:

• Integration procedure
• Signature generation and verification
• Payment types, operations and payments
• Operation statuses and response codes

General information

You can perform test purchases with the Promptpay payment method by using Payment Page and Gate.

To perform test purchases, you'll need the test project ID and the secret key to it. To get them, please contact the technical support team at support@monetix.pro and then contact your Monetix key account manager to set up a test environment to work with the Promptpay payment method.

When performing test payments, keep in mind that:

• your requests must contain the test project ID
• the payment currency that you send in requests can be only THB
• random values may be used as the payment ID and in the parameters with customer information
• the interface of the test checkout page may be different from the production one.

Test payments statuses

To receive one of the following statuses in the callback with the test purchase result, use a particular value for the purchase amount in the request:

• 40000 and 40400—to receive a callback with the decline status
• 90000—to receive a callback with the success status and a purchase amount different from the amount in the request
• any other value—to receive a callback with the success status

Testing purchase by using Payment Page

To perform a test purchase by using Payment Page:

1. Send a request for purchase through Payment Page to the payment platform.
2. Choose a payment method on the test checkout page. If you've passed the force_payment_method parameter with the promptpay value in the request, you won't have to choose the payment method.
3. Specify a random first name and last name in the data entry fields. The payment instructions will be displayed to you after.
4. Accept a callback with information about the test purchase result.
5. Wait a few seconds until the result of the test purchase is displayed to you on the test checkout page.

See the detailed information about purchase processing through Payment Page in the Promptpay payment method in the Purchase by using Payment Page section.

Testing purchase by using Gate

To perform a test purchase by using Gate:

1. Send a request for performing a test purchase to the payment platform.
2. Accept a callback with the data for displaying payment instructions. Your system will display the payment instructions to you after.
3. Accept a callback with information about the test payment result.
4. Wait a few seconds until your system shows you the result of the test purchase.

See the detailed information about purchase processing through Gate in the Promptpay payment method in the Purchase by using Gate section.

As with other payment methods Monetix offers, when using this method, you have several options to analyze the information about payments and operations.

You can load and analyze all the necessary information in Dashboard (dash-light.trxhost.com), for instance you can use the analytic panels in the Analytics section for this purpose.

Also, you can export the information for further analysis by using third party analytical tools. The following options are available:

• Dashboard allows you to download reports in CSV format by using the tools in the Reports section. You can perform export as a one-time or regular download of data to your local computer.
• Data API allows you to have payment information exported in JSON format and delivered to a URL you specify. The payment information is exported by means of sending requests to the /operations/get endpoint.

If you have any further questions regarding payment data analysis, contact Monetix technical support.