Link Aja Payment Guide

DOKU has partnered with various e-money providers and one of them is Link Aja to provide E-Money Payment. Learn more about how DOKU can help you integrate with Link Aja here.

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Integration steps

Here is the overview of how to integrate with Link Aja:

1. Generate request
2. Complete payment in Link Aja App
3. Acknowledge payment result

Direct API - Link Aja Sequence Diagram

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1. Generate Request

To generate request, you will need to hit this API through your Backend :

API Request

Type	Value
HTTP Method	POST
API endpoint (Sandbox)	https://api-sandbox.doku.com/linkaja-emoney/v2/ServiceRequestPayment
API endpoint (Production)	https://api.doku.com/linkaja-emoney/v2 /ServiceRequestPayment

Here is the sample of request header to create an order:

Client-Id: OCO-0203-1676104296656
Request-Id: 24bb5232-3fe6-47a5-b0b0-d0fc3c6b5fdb
Request-Timestamp: 2023-06-08T08:50:00Z
Signature: HMACSHA256=vl9DBTX5KhEiXmnpOD0TSm8PYQknuHPdyHSTSc3W6Ps=

Request Header Explanation

Parameter	Description
Client-Id	Client ID retrieved from DOKU Back Office
Request-Id	Unique random string (max 128 characters) generated from merchant side to protect duplicate request
Request-Timestamp	Timestamp request on UTC time in ISO8601 UTC+0 format. It means to proceed transaction on UTC+7 (WIB), merchant need to subtract time with 7. Ex: to proceed transaction on September 22th 2020 at 08:51:00 WIB, the timestamp should be 2020-09-22T01:51:00Z
Signature	Security parameter that needs to be generated on merchant Backend and placed to the header request to ensure that the request is coming from valid merchant. Please refer to this section to generate the signature

Here is a sample of request body to create an order:

{
    "order": {
        "invoice_number": "INV-20210124-0001",
        "amount": 150000,
        "callback_url": "https://merchant.com/return-url",
        "line_items": [
             {
               "name":" Roti",
               "price": 10000,
               "quantity": 1
             } 
        ]
    },
    "additional_info": {

    },
    "customer": {
            "name": "Jessica Tessalonika",
            "email": "example@doku.com",
            "phone" : "081112345678"
    }
}

Request Body Explanation

Parameter	Type	Mandatory	Description
order.invoice_number	string	Mandatory	Merchant's designated transaction invoice number Allowed chars: alphabetic, numeric, special chars
order.amount	number	Mandatory	Transaction amount Allowed chars: numeric
order.callback_url	string	Mandatory	Merchant URL that will redirected to after the order completed
order.line_items	string	Mandatory	Information about customer's basket (item's name, price, and quantities)
customer.name	string	Optional	Information about customer's name
customer.email	string	Optional	Information about customer's email
customer.phone	number	Optional	Information about customer's phone
additional_info	string	Optional	Additional info

API Response

After hitting the above API request, DOKU will give the response.

Type	Value
HTTP Status	200
Result	SUCCESS

Client-Id: MCH-0001-10791114622547
Request-Id: 24bb5232-3fe6-47a5-b0b0-d0fc3c6b5fdb
Response-Timestamp: 2021-07-09T02:05:14Z
Signature: HMACSHA256=9UPUFzOqJc47aJzD9ESOTcWg6TMsg3mqSP+DnUO8ENE=

Response Header Explanation

Parameter	Description
Client-Id	Same as the request
Request-Id	Same as the request
Response-Timestamp	Timestamp Response on UTC with format ISO8601 UTC+0 from DOKU
Signature	Signature generated by DOKU based on the response body

Here is the sample of response body:

{
"order": {
        "invoice_number": "LINKAJA23052595",
        "amount": "10000.00"
    },
    "emoney_configuration": {
        "identifier": [
            {
                "name": "TERMINAL_ID",
                "value": "e2etest"
            } 
        ]
    },
    "emoney_payment": {
        "redirect_method_http": "POST",
        "redirect_url_http": "https://api-uat.doku.com/doku/simulator/v1/linkaja/redirectPostToPost",
        "redirect_parameter": [
            {
                "name": "Message",
                "value": 
                "cXAwdzcvd3VEeDlRTzl0V1g1NGZyMmpQbFBPMDQxaHpyclNLazdlV09PTUZ1Z1lJaDlscjU1QmZNS2VPTTNiOGpFY3Mzbmp1dStqUjRWL3FaTGRsekVQWVF3YWRRUVQ2UzZsQkFRSzl2ek1zbERWQWtEY01EV0xpaTYrcnRYVUJmSkYvc0tXbGpRWXFCMHVMVHpKMXZTRSt2eTY5K2lOQ3k4aFdCTTBUc2ZGaTlYaWdQZ1JGZ2VjWTNaUlBNT0JCaTNnUzdhMitrNkRlY2hZMWh1R2xpQWtLMTlrLzIyWkxLWnNxQXZTU1VkdllqV0FmeGtqVTVzUjM3ZUIvSE9mag=="
            } 
        ],
        "status": "PENDING"
    }
}

Response Body Explanation

Parameter	Type	Mandatory	Description
order.invoice_number	string	Mandatory	Same as the request
order.amount	number	Mandatory	Same as the request
emoney_configuration.identifier	string	Mandatory	Merchant identifier by Link Aja Max length: 15 Allowed chars: alphabetic, numeric
emoney_payment.redirect_method_http	string	Mandatory	HTTP redirect method by Link Aja Max length: 8 Allowed chars: alphabetic, numeric
emoney_payment.redirect_url_http	string	Mandatory	Merchant's redirect URL
emoney_payment.status	string	Mandatory	Status of the create order request Possible value: PENDING, SUCCESS.
emoney_payment.parameter	string	Mandatory	Custom message

2. Complete Payment in Link Aja

After the customer completed the payment, they will be redirected to the defined redirect.url that you set on the API request.

3. Acknowledge payment result

DOKU will send HTTP Notification to your defined Notification URL. Learn how to handle the notification from DOKU:

• Handling DOKU HTTP Notification

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