Callback Service

TripLink supports callback to customer interfaces in multiple business scenarios. Customers can implement their own business logic in the callback interface.

The callback is based on the HTTP/HTTPS protocol with the POST method, and all request bodies are in JSON format with all characters encoded in UTF-8.

The callback process is considered Failed if any of the following situations occur: request failure, request timeout, or response status code other than 2XX.

The callback is divided into Synchronous and Asynchronous types. Synchronous requests must respond in a timely manner and have no retry mechanism, while asynchronous requests do not need to respond in a timely manner and have a retry mechanism.

Callback List

Name	Type	Response Time	Retry Count	Retry Interval
Authorization Decision Callback	Synchronous	3s	N/A	N/A
Authorization Result Notification	Asynchronous	9s	20	N × 2min

Authorization Decision Callback

Before approving an authorization request, TripLink will call back to this customer interface, allowing the customer to implement their own risk control and authorization decisions.

If the callback fails, TripLink will degrade to using default decision results for the customer, as outlined in the Callback Parameters.

If the callback fails continuously for 10 times, the system will no longer request the customer interface and will directly degrade, requiring the customer to manually re-enable it.

Request Body

Name	Type	Description	Note
bizContent	String	Actual message.	Needs to be deserialized through JSON. See AuthorizationDecision for details.
sign	String	Signature of the original bizContent.	Verify the signature with the RSA public key of the API. See Preparation for details.

AuthorizationDecision

Name	Type	Description	Note
authId	String	ID	Unique globally.
transactionId	String	Transaction ID	The transactionId of the reversal transaction is same as the corresponding authorized transaction.
cardLogId	String	Card ID	TripLink-specific card identifier.
localDate	String	Transaction Local date	In local time zone, formatted as yyyyMMdd.
localTime	Sreing	Transaction Local time	In local time zone, formatted as HHmmss.
occurTime	String	Transaction Occurrence time	In card time zone, formatted as yyyy-MM-dd HH:mm:ss.
messageType	String	Transaction type	Enum value, 4 digits, see **authorization type ** dropdown list for details.
messageTypeDesc	String	Transaction type description	See **authorization type ** dropdown list for details.
transCurrency	String	Transaction currency	ISO 4217 currency code, consisting of 3 digits.
transCurrencyAmt	String	Transaction amount	Decimal number, corresponding to the transaction currency.
localCurrency	String	Card currency	ISO 4217 currency code, consisting of 3 digits.
localCurrencyAmt	String	Card transaction amount	Decimal number, corresponding to the card currency. For refund transactions, the card transaction amount is 0.
cardAvailableBalance	String	Card available balance	Decimal number, corresponding to the card currency.
merchantId	String	Merchant ID
merchantName	String	Merchant name
merchantCategoryCode	String	Merchant MCC	ISO 18245 merchant category code, a 4-digit number.
merchantCountry	String	Merchant country	(unstandardized)
isoMerchantCountryCode	String	Merchant country	ISO 3166 country code, 3 letters. (maybe empty)
merchantCity	String	Merchant city
acquirerId	String	Acquirer ID
useRef1Txt	String	User-defined field 1
useRef2Txt	String	User-defined field 2
useRef3Txt	String	User-defined field 3
useRef4Txt	String	User-defined field 4
useRef5Txt	String	User-defined field 5

authorization type

messageType	messageTypeDesc
6810	Authorization Approval
6510	Auth Refund Approval
6820	Authorization Query

request body sample

{
  "bizContent": "{\"authId\":\"311503c7-0466-4d01-a500-551c40b91cf6\",\"cardLogId\":\"51a50ffbbd0437ff10fffb93d1620e213441a30a3fa16164d57d98cade066ba0\",\"localTime\":\"025900\",\"localDate\":\"20220623\",\"occurTime\":\"2022-06-23 10:59:00\",\"merchantCategoryCode\":\"0011\",\"merchantName\":\"\",\"merchantCountry\":\"\",\"state\":\"\",\"merchantCity\":\"\",\"messageType\":\"6810\",\"messageTypeDesc\":\"Authorization Approval\",\"acquirerId\":\"213457\",\"merchantId\":\"080000100003\",\"transCurrency\":\"840\",\"transCurrencyAmt\":\"55.66\",\"localCurrency\":\"840\",\"localCurrencyAmt\":\"55.66\",\"useRef1Txt\":\"anything\",\"useRef2Txt\":\"\",\"useRef3Txt\":\"\",\"useRef4Txt\":\"\",\"useRef5Txt\":\"\",\"cardAvailableBalance\":\"955.57\"}",
  "sign": "k2/HGZOYIFnYI+WZwW1R1YYryOmYd6ds5rAoioKstfslmeBJvVo1KkPOr5zMt86uZ9XFqJV1vDvavreClLnTBbALvtuF44JLZQsGngMe4MvKcWM2oJX4cCcqptqXkz7XpgCuSST0HeTJ8EHuAIQuF+W87/u86pcUMCBjDus1NuNf5MbS/y/eMW3qCwA5s6q1sp7AR2zmXna+eI+n+JEc9tylxo14Kr17pLGX0NRx+iwuw4H/tnazGDN49vW3kbFzRhj/jxN4vB2rvWIdrL1/pdhI2wFRt5b8AfIwhv5ae0GxP3AuaRCNU3LL+YvkvdIA2o+7RctkGhlbe4upzYARog=="
}

Response Body

Clients must identify the authorization decision result through the code field in the response body.

If the value of the code field is 0, it means authorization is granted. If the value is not 0, it means authorization is denied.

Name	Type	Required	Description	Note
code	String	Y	Result code	0: Authorization granted; non-0: Authorization denied.
msg	String	N	Result code description

response body sample

{
  "code": "0",
  "msg": "success"
}

Authorization Result Notification

TripLink will send the authorization results to this customer interface asynchronously after the authorization is completed.

If the notification fails, it will be Retried. After the maximum number of retries is reached, this notification will no longer be sent, but other notifications will not be affected.

Request Body

Name	Type	Description	Note
noticeType	String	Notification type	auth.
bizContent	String	Actual message	It needs to be deserialized through JSON. See AuthorizationNotification for details.
sign	String	Signature	Verify the signature with the RSA public key of the API. See Preparation for details.

AuthorizationNotification

Name	Type	Description	Note
authId	String	ID	Unique globally.
transactionId	String	Transaction ID	The transactionId of the reversal transaction is same as the corresponding authorized transaction.
cardLogId	String	Card ID	TripLink-specific card identifier.
occurTime	String	Transaction Occurrence time	In card time zone, formatted as yyyy-MM-dd HH:mm:ss.
messageType	String	Transaction type	Enum value, 4 digits, see authorization type dropdown list for details.
messageTypeDesc	String	Transaction type description	See authorization type dropdown list for details.
reversalType	String	Reversal Type	Only valid when the authorization type is 6930 or 6940. 0: System reversal; 1: Non-system reversal.
respCode	String	Transaction Response Code	Enumerated value, 4 digits. See response code dropdown for details.
respCodeDesc	String	Transaction Response Code Description	See response code dropdown for details.
approveCode	String	Authorization Code	Random 6 digits.
transCurrency	String	Transaction currency	ISO 4217 currency code, consisting of 3 digits.
transCurrencyAmt	String	Transaction amount	Decimal number, corresponding to the transaction currency.
localCurrency	String	Card currency	ISO 4217 currency code, consisting of 3 digits.
localCurrencyAmt	String	Card transaction amount	Decimal number, corresponding to the card currency. For refund transactions, the card transaction amount is 0.
cardAvailableBalance	String	Card available balance	Decimal number, corresponding to the card currency.
merchantId	String	Merchant ID
merchantName	String	Merchant name
merchantCategoryCode	String	Merchant MCC	ISO 18245 merchant category code, a 4-digit number.
merchantCountry	String	Merchant country	(unstandardized)
isoMerchantCountryCode	String	Merchant country	ISO 3166 country code, 3 letters. (maybe empty)
merchantCity	String	Merchant city
acquirerId	String	Acquirer ID
crossBorderType	String	Cross-border type	0: Domestic; 1: Overseas.
useRef1Txt	String	User-defined field 1
useRef2Txt	String	User-defined field 2
useRef3Txt	String	User-defined field 3
useRef4Txt	String	User-defined field 4
useRef5Txt	String	User-defined field 5

authorization type

messageType	messageTypeDesc
6810	Authorization Approval
6890	Authorization Decline
6510	Auth Refund Approval
6590	Auth Refund Decline
6930	Authorization Reversal Approval
6940	Auth Refund Reversal Approval
6820	Authorization Query

response code（6810 Authorization Approval）

respCode	respCodeDesc
0000	Authorization Approval

response code（6890 Authorization Decline）

respCode	respCodeDesc
1002	High Risk Transaction
1003	Invalid Account
1101	Abnormal Customer Status
1102	Card canceled
1103	Authorization Amount Error
1104	VAN Amount Limit Error
1105	Invalid Expiry Date
1106	Transaction Count Over Limit
1107	Invalid CVV2
1108	VAN Amount Limit Error
1110	Trans Currency Not Allowed
1111	MCC Error
1112	VAN credit limit greater than max Limit
1113	VAN credit limit less than min Limit
1114	Transaction Date before card activeDate
1115	Transaction Date after card inactiveDate
1116	Auth Amount greater than available VAN credit limit
1117	Auth Amount greater than available account credit limit
1118	Limited usage with abnormal card status
1201	Authorization already in process, please wait until the last authorization completed
1203	Not support 3ds
2012	Cardholder cancels identity verification
2014	Cardholder fails to complete identity verification within the specified time
2019	Cardholder fails to complete identity verification within the specified number of attempts
2022	Merchant requests invalid information
2222	Authorization decision reject
2299	Authorization decision downgrade reject
3004	Abnormal Card Scheme Network
9000	Unknow Error

response code（6510 Auth Refund Approval）

respCode	respCodeDesc
0000	Authorization Approval

response code（6590 Auth Refund Decline）

respCode	respCodeDesc
1002	High Risk Transaction
1003	Invalid Account
1101	Abnormal Customer Status
1107	Invalid CVV2
1110	Trans Currency Not Allowed
1111	MCC Error

response code（6930 Authorization Reversal Approval）

respCode	respCodeDesc
0000	Authorization Approval
1002	High Risk Transaction
1003	Invalid Account
1101	Abnormal Customer Status
1105	Invalid Expiry Date
2001	Original Transaction Unmatch
2002	Original Transaction Unmatch

response code（6940 Auth Refund Reversal Approval）

respCode	respCodeDesc
0000	Authorization Approval
1002	High Risk Transaction
1003	Invalid Account
2001	Original Transaction Unmatch
2002	Original Transaction Unmatch

response code（6820 Authorization Query）

respCode	respCodeDesc
0000	Authorization Approval
1002	High Risk Transaction
1003	Invalid Account
1102	Card canceled
1118	Limited usage with abnormal card status

request body sample

{
  "noticeType": "auth",
  "bizContent": "{\"customerId\":\"CSR47184A93E35E4\",\"authId\":\"7f1e58b6-e1da-4647-9054-0c1e5b85df4a\",\"cardLogId\":\"51a50ffbbd0437ff10fffb93d1620e213441a30a3fa16164d57d98cade066ba0\",\"cardAvailableBalance\":\"955.57\",\"occurTime\":\"2022-06-23 14:52:35\",\"transCurrency\":\"840\",\"transCurrencyAmt\":\"44.55\",\"localCurrency\":\"840\",\"localCurrencyAmt\":\"44.55\",\"respCode\":\"0000\",\"respCodeDesc\":\"Authorization Approval\",\"approveCode\":\"164913\",\"messageType\":\"6810\",\"messageTypeDesc\":\"Authorization Approval\",\"useRef1Txt\":\"anything\",\"merchantName\":\"\",\"merchantCategoryCode\":\"0011\",\"merchantId\":\"080000100003\",\"merchantCountry\":\"\",\"merchantCity\":\"\",\"merchantPostcode\":\"\",\"acquirerId\":\"213457\",\"state\":\"\"}",
  "sign": "raqtzxjjWGyjrPDkn3aR+N+ZU6kpyiLeJNeFzQXmfoqsomkxsccg783FraLPWBrPgn0nhjtuVQLIWMply1chS7g1jgdGaFiGSXCwgL+XIVX0n2J1Z8YtDBEqeJLbRcmWiGAavQk8JSjBtDigJIopjL5mAT9+X5vrf4a6YxpAoky7DemuClKNb50OuH15ADICWednwQZsI0wJ8WTpZNb4f9jrMGdlztXvj/Nf7Gk2Uwx1v/morWEDe1BFD8FWFUsmKwdBxYS8iMT3f5YiAWzYt7VItOl6ymlNSdZmGazXYQ2MPScunPQXdSf2fQ6NM8NVlz7or5w5cj7aiZAgzpHUrQ=="
}

Response Body

The customer must identify the notification receiving result through the code field in the response body

If the value of the code field is 0, it means receiving success. If the value is not 0, it means receiving failure.

Name	Type	Required	Description	Note
code	String	Y	Result code	0: receiving success; non-0: receiving failure.
msg	String	N	Result code description

response body sample

{
  "code": "0",
  "msg": "success"
}

Notification Query and Resend

Customers can query all result notifications in the merchant system (Transaction Management - Notification Query) and support resend (single/batch).

Signature Verification SDK example

Java SDK

public void rsaVerify() {
    String bizContent = "{\"customerId\":\"CSR47184A93E35E4\",\"authId\":\"07c93b59-23b2-4aa0-8cff-55a026b02329\",\"cardLogId\":\"42f4d634e184351e6b035eb58ea4892620ce2eaa5347fcd206646fe24ffae905\",\"cardAvailableBalance\":\"966.68\",\"occurTime\":\"2022-06-23 14:06:36\",\"transCurrency\":\"840\",\"transCurrencyAmt\":\"33.44\",\"localCurrency\":\"840\",\"localCurrencyAmt\":\"33.44\",\"respCode\":\"0000\",\"respCodeDesc\":\"Authorization Approval\",\"approveCode\":\"057685\",\"messageType\":\"6810\",\"messageTypeDesc\":\"Authorization Approval\",\"useRef1Txt\":\"anything\",\"merchantName\":\"\",\"merchantCategoryCode\":\"0011\",\"merchantId\":\"080000100003\",\"merchantCountry\":\"\",\"merchantCity\":\"\",\"merchantPostcode\":\"\",\"acquirerId\":\"213457\",\"state\":\"\"}";
    String sign = "tNNvnZBcvb7IR4qkPM9j+5/Hun1qj7MlnmcqeLKAO0Q8R4EB2OYLPTf/q50Rlq/gJf5x93OWSbSg9QqhktgZM0abZIKoAnidzNdGoLdINPSfdhkB/bkrpC8LctqEsLXwU2Kn3LHK3qAgDDJAf5AGmZmzn9SXnO2tvdVMvLbSj8vACpMm12g/zQyUPJ5NlCI7Hf5DXQeQy/Hd0hSyAFuhHO/V++a4TdEDZ3wqh9a1JVs0cy7t63vI0IT6r6l6hjiInoahW7H/zVZ1jcdhxNc1hGJRaM6GvlwsSFH9+gqIYv/DIPxIqTP2Bk6IDc0JaPBx/ClH7mefkunRerzCXFKC+g==";

    boolean verified = CipherUtils.rsaVerify(TRIPLINK_PUBLIC_KEY, bizContent, sign);

    Assert.assertTrue(verified);
}

PHP SDK

public function testRsaVerify(): void {
    $bizContent = '{"customerId":"CSR47184A93E35E4","authId":"07c93b59-23b2-4aa0-8cff-55a026b02329","cardLogId":"42f4d634e184351e6b035eb58ea4892620ce2eaa5347fcd206646fe24ffae905","cardAvailableBalance":"966.68","occurTime":"2022-06-23 14:06:36","transCurrency":"840","transCurrencyAmt":"33.44","localCurrency":"840","localCurrencyAmt":"33.44","respCode":"0000","respCodeDesc":"Authorization Approval","approveCode":"057685","messageType":"6810","messageTypeDesc":"Authorization Approval","useRef1Txt":"anything","merchantName":"","merchantCategoryCode":"0011","merchantId":"080000100003","merchantCountry":"","merchantCity":"","merchantPostcode":"","acquirerId":"213457","state":""}';
    $sign = 'tNNvnZBcvb7IR4qkPM9j+5/Hun1qj7MlnmcqeLKAO0Q8R4EB2OYLPTf/q50Rlq/gJf5x93OWSbSg9QqhktgZM0abZIKoAnidzNdGoLdINPSfdhkB/bkrpC8LctqEsLXwU2Kn3LHK3qAgDDJAf5AGmZmzn9SXnO2tvdVMvLbSj8vACpMm12g/zQyUPJ5NlCI7Hf5DXQeQy/Hd0hSyAFuhHO/V++a4TdEDZ3wqh9a1JVs0cy7t63vI0IT6r6l6hjiInoahW7H/zVZ1jcdhxNc1hGJRaM6GvlwsSFH9+gqIYv/DIPxIqTP2Bk6IDc0JaPBx/ClH7mefkunRerzCXFKC+g==';

    $verified = CipherUtils::rsaVerify(TRIPLINK_PUBLIC_KEY, $bizContent, $sign);

    $this->assertTrue($verified);
}

TRIPLINK_PUBLIC_KEY：TripLink RSA public key.