Payment

The user is provided with wallet details to which payment must be made.
The user makes a payment in their wallet app and receives a unique transaction number.
Next, the user enters a unique transaction number in the payment window, after which the transaction is activated.
Paykassma sends a postback to the merchant's side.
Funds are credited to the user’s balance on the merchant platform.

Payment window integration (plugin)

Example of a link to open a Bank Transfer Manual payment window:

`https://plugin.{URL_сервера}/? label=label &currency_code=LKR &lang=lang &wallet_type=banktransfer_manual &custom_transaction_id=custom_transaction_id &fixed_amount=fixed_amount &payment_url_success_id=2 &payment_url_pending_id=3 &payment_url_fail_id=1 &success_url=hash &fail_url=hash &pending_url=hash`

wallet_type=banktransfer_manual
 currency_code=LKR
Available languages (lang): en, si

Pay attention to the description of the parameters payment_url_success_id / payment_url_fail_id/ payment_url_pending_id and success_url / fail_url / pending_url.
To use payment_url_success_id / payment_url_fail_id / payment_url_pending_id you need to send the URLs to Paykassma support and use the received IDs in the parameters.
To use success_url / fail_url / pending_url you must use hashing URLs ( For more details on hashing click here ).

For the description of all the plug-in parameters click here.

API integration

Creating payment

URL: https://api.{ server_URL }/api/v1/transaction/create/banktransfer_manual?secret={pluginapi_secret}

At this stage we first accept a request for input through the payment system and in response we will provide the wallet details to which the user should transfer the payment. After the payment is made you will need to send a request to activate the transaction.

Request method:

POST

Format:
JSON

Parameters:

Name	Type	Required	Max Length	Description
currency	string	yes	3	Currency code.
label	string	yes	190	The unique identifier (ID) of the user who makes the payment.

{
  'currency': 'LKR',
  'label': 'eligendi'
}

{
    "status": "ok",
    "params": {
        "Account number": "066013529665120",
        "Bank name": "Seylan [Mathugama]",
        "Holder name": "K A PALITHA",
        "is_check_amount": null
    }
}

{
    'status': 'fail',
    'message': 'MESSAGE'
}

Запрос активации

URL: http://api.{ server_URL }/api/v1/possible-transaction?secret={pluginapi_secret}

Request method:
POST

Format:
form-data

Parameters:

Name	Type	Required	Max Length	Description
currency_code	string	yes	3	Currency code (LKR).
wallet_type	string	yes	190	banktransfer_manual
label	string	yes	190	The unique identifier (ID) of the user who makes the payment.
key1	string	yes	25	Transaction ID received from the use (6-20, letters and digits).
screenshot	file	yes		Screenshot of the payment from the user.
amount	int	yes	256	Payment amount.
custom_transaction_id	string	yes	190	The identifier of the transaction in the Client's system. Must be unique.

{
    "status": "success",
    "message": "",
    "code": 20000,
    "data": [],
    "paginate": {
        "offset": 0,
        "total": 1,
        "limit": 1
    }
}

{
    'status': 'fail',
    'message': 'MESSAGE'
}

Deposit postback

For the general documentation on post backs click here.

Example of a deposit postback for a Bank Transfer Manual

{
  "signature": "76d0a2c6dadb2fc87d2dbdcb50809e9fb3cbc691",
  "wallet_type": "banktransfer_manual",
  "amount": 10000,
  "currency_code": "LKR",
  "label": "1234",
  "converted_amount": {
    "USD": 33.2,
    "INR": 2776,
    . . . ,
    "USDT": 33.17921909,
    "USDTTRC20": 0,
    "USDT20": 0
  },
  "direction": "ingoing",
  "created_datetime": "2024-04-18 19:20:59",
  "access_key": "UevIJHFpWVoL0ad4x6CAnQ8R",
  "additional_data": [
    {
      "activated_datetime": "2024-04-18 22:20:58",
      "exchanger_identifier": null,
      "comment": "",
      "amount": "10000",
      "currency_code": "LKR",
      "wallet_type": "banktransfer_manual",
      "stockpiling_id": 204,
      "transaction_id": "01003246080588218368",
      "transaction_type": 0,
      "plugin_custom_order_id": "test1234",
      "withdrawal_id": null,
      "withdrawal_status": null,
      "account_number": "",
      "account_name": "",
      "account_email": "",
      "bank_details": {
        "bank_code": "",
        "branch_code": ""
      }
    }
  ]
}

The Paykassma server is waiting for a response in json {"status": "ok"} response code 200, otherwise, when receiving a different response, Paykassma will forward the postback with a certain frequency.
Repeated postbacks must also be answered with {"status":"ok"} response code 200.

Withdrawals for users

For the general documentation on the withdrawals of funds click here.

Creating withdrawal

URL: https://api.{ server_URL }/v2/withdrawal/create

Request method:

POST

Format:
JSON

Parameters:

Name	Type	Required	Description
withdrawal_id	string	yes	Withdrawal ID, if the parameter is not passed, then the system generates withdrawal _id.
payment_system	string	yes	Payment system.
amount	int	required	Additional requirements: amount >= The value of the set minimum value; amount <= The value of the set maximumvalue.
currency_code	string	yes	Currency code.
label	string	yes	The unique identifier (ID) of the user who makes the payment.
account_number	string	yes	Номер счета пользователя. Validation: Digits: 0-9.
account_name	string	yes	Имя держателя счета.
bank_details.bank_code	string	yes	Банк из предоставленного списка банков.
is_test	boolean	yes	The is_test parameter possible values: true - if Withdrawal is test; false - if Withdrawal is real.
signature	string	yes	Signature generated with private_key.

{
  "withdrawal_id": "test12345678",
  "payment_system": "banktransfer_manual",
  "amount": 4000,
  "currency_code": "LKR",
  "label": "test",
  "account_number": "100670008622",
  "account_name": "AWAKA N V S",
  "bank_details": {
    "bank_code": "Nations Trust Bank"
  },
  "signature": "83722f5c8c963d7f7a6e5bbe0d1f13a4761927c4"
}

{
    "status": "ok",
}

{
    'status': 'fail',
    'message': 'MESSAGE'
}

*If, when trying to create a withdrawal request, the amount of account balances in the currency of the request is less than the total amount of new and still incomplete applications, the error message"Insufficient balance" will be displayed (to configure this functionality, contact the TS Paykassma).

{
    "status": "fail",
    "message": {
        "withdrawals_sum_amount": [
            "Insufficient balance"
        ]
    }
}

List of current banks

Alliance Finance Company PLC
Amana Bank PLC
Asia Asset Finance PLC
Bank of Ceylon
Bank of China Limited
Bimputh Finance PLC
CBC Finance Limited
Cargills Bank Limited
Central Finance PLC
Citi bank N. A.
Citizen Development Bank
Commercial Bank PLC
DFCC Bank PLC
Deutsche Bank AG
Dialog Finance PLC
HDFC Bank
HNB Finance PLC
HSBC
Habib Bank Limited
Hatton National Bank PLC
Indian Bank
Indian Overseas Bank
Kanrich Finance Limited
L B Finance PLC
LOLC Development Finance
LOLC Finance PLC
Lanka Credit Finance LTD
MCB Bank Limited
Mercantile Investments
Merchant Bank PLC
National Development Bank
National Savings Bank
Pan Asia Bank PLC
People Leasing Finance
Peoples Bank
Polgahawela Co-op Bank
Public Bank Berhad
Regional Development Bank
Richard Piers Finance
Sampath Bank PLC
Sarvodhaya Finance
Senkadagala Finance PLC
Seylan Bank PLC
Singer Finance PLC
Siyapatha Finance PLC
Softologic Finance PLC
Standard Chartered Bank
State Bank of India
Softologic Finance PLC
Standard Chartered Bank
State Bank of India
State Mortgage Bank
Union Bank Of Colombo PLC
Vallibel Finance PLC
Sanasa Development Bank
Fintrex Finance Limited

Example of a withdrawal postback for a Bank Transfer Manual

{
  "signature": "74ead14ec43203fdd41d08cc10d96959241b4aaa",
  "wallet_type": "banktransfer_manual",
  "amount": 4000,
  "currency_code": "LKR",
  "label": "test",
  "converted_amount": {
    "USD": 13.28,
    "INR": 1110,
    "EUR": 12.48,
    ... ,
    "USDTTRC20": 0,
    "USDT20": 0
  },
  "direction": "outgoing",
  "created_datetime": "2024-04-18 19:42:01",
  "access_key": "UevIJHFpWVoL0ad4x6CAnQ8R",
  "additional_data": [
    {
      "activated_datetime": "",
      "exchanger_identifier": "",
      "comment": "",
      "amount": "4000",
      "currency_code": "LKR",
      "wallet_type": "banktransfer_manual",
      "stockpiling_id": null,
      "transaction_id": "",
      "transaction_type": null,
      "plugin_custom_order_id": "",
      "withdrawal_id": "test12345678",
      "withdrawal_status": 1,
      "account_number": "100670008622",
      "account_name": "AWAKA N V S",
      "account_email": "",
      "bank_details": {
        "bank_code": "Nations Trust Bank",
        "branch_code": null
      }
    }
  ]
}

The Paykassma server is waiting for a response in json {"status": "ok"} response code 200, otherwise, when receiving a different response, Paykassma will forward the postback with a certain frequency.
Repeated postbacks must also be answered with {"status":"ok"} response code 200.

Withdrawal statuses

1	SUCCESS	Status for withdrawal when the withdrawal request has been successfully processed.
5	FAIL	Status for withdrawal when the withdrawal request was rejected.

Creating withdrawal request in Paykassma BO

To create a withdrawal request, you need to go to the Withdrawals page Payments → Withdrawals and perform the following steps

Press the button "Add withdrawal request".
Select payment system from list.
Fill in the fields to create the request in the next window (the list of fields is standardized and not all fields are required. To create a request for a specific PS, you should fill in the required fields for this PS).
Required fields for Bank Transfer Manual withdrawal:
- Label (user ID);
- Amount;
- Currency;
- Wallet recipient.

4. After payment the withdrawal status will change.

Paykassma does not send postback for withdrawals created manually.