Account checks
An ACCOUNTCHECK request allows a card to be validated by checking the cardholder’s first line of address, the cardholder’s postcode and the security code, to ensure the details entered by the customer are valid. Click here to learn more about the checks performed.
Requirements
- Account checks are only available for certain acquiring banks. Before you begin, please contact our Support Team and ensure your acquiring bank supports this functionality.
- Account checks can only be performed for card-based payment methods.

Failure to submit these fields will result in a “60025” (Invalid request) error being returned in the response.
Update your payment form
You can update your payment form to instruct our JavaScript library to process an Account check prior to performing a standard transaction. This is done by specifying custom requestTypes, as shown in the example below:
<html> <head> </head> <body> <div id="st-notification-frame"></div> <form id="st-form" action="https://www.example.com" method="POST"> <div id="st-card-number" class="st-card-number"></div> <div id="st-expiration-date" class="st-expiration-date"></div> <div id="st-security-code" class="st-security-code"></div> <button type="submit" id="st-form__submit" class="st-form__submit"> Pay securely </button> </form> <script src=<DOMAIN>/js/v2/st.js></script> <script> (function() { var st = SecureTrading({ jwt: 'INSERT YOUR JWT HERE' }); st.Components({"requestTypes":["ACCOUNTCHECK","THREEDQUERY","AUTH"]}); })(); </script> </body> </html>
Replace <DOMAIN> with a supported domain. Click here for a full list.
Add “Webservices” users
A Webservices user account allows us to authenticate your requests to Trust Payments. Using MyST, follow these steps to create a “Webservices” user for your account:

- Sign in to MyST using your provided username & password.
- Click “Users” from the left side-menu, then on the “Manage users” page, click “Add user”:
- Fill in the required fields.
Web Services usernames are email addresses that can have a maximum length of 255 (maximum of 64 characters before the ”@” symbol).

Failure to do so will prevent requests from being processed successfully.

“Valid IP/network(s)” field (required)
By entering your system’s IP (or range of IPs) in this field, Trust Payments will only accept Web Services requests originating from this IP. This means that even if your Web Services credentials have been compromised, requests cannot be performed without access to your IP network.
Multiple IP addresses can be separated with either a semicolon (;) or a comma (,).
Ranges of IPs may be specified by using a CIDR netmask in the format 1.2.3.4/8.
Important: “Role if invalid IP” must be set to “Prevent login”.
- Allocate the sites through which you wish to process Web Services payments, by typing into the “Allocated sites” field:
- Click “Save”.
MyST
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providing you with quick access to your payment history.

Everything you need to know to get started.

How to view recent transactions, perform actions on payments, generate reports and send invoices.

How to manage your sub-users and learn about different user roles.

How to view and configure your sites.

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Tips to resolve issues you may encounter
Using Account Check to verify customer’s details
Follow these instructions when using Account Checks to verify the customer’s details prior to processing a payment.

Prerequisites

If you are unsure, please contact our Support Team for assistance.

To process an e-commerce Account Check that is authenticated with 3-D Secure, you will need to utilise our JavaScript Library instead of the solution described below. Click here to get started.
The following content should only be utilised by merchants processing Account Checks that are Mail or Telephone Order (MOTO), Merchant Initiated Transactions (MIT), or using other workflows that are exempt from the PSD2 mandate.

Failure to submit these fields will result in a “60025” (Invalid request) error being returned in the response. Click here for further information.

- Account checks are only available for certain acquiring banks. Before you begin, please contact our Support Team and ensure your acquiring bank supports this functionality.
- Account checks can only be performed for card-based payment methods.
Mandate considerations
Visa and Mastercard have mandated that you must obtain cardholder consent if storing card details for future use, and that these must be flagged at the time of the first authorisation, by submitting the credentialsonfile field in your requests. To do so, you will need to ensure the ACCOUNTCHECK request submitted includes the additional field credentialsonfile, with value set to “1”.
You must also flag any subsequent payments that are utilising previously-stored credentials, by including the credentialsonfile field in these requests with value set to “2”.
Click here to learn more about Credentials on File.
Checks performed
All Account Checks processed will perform checks on the cardholder’s first line of address, the cardholder’s postcode and the security code, to ensure the details entered by the customer are valid.
Click here to learn more about these checks.
Process overview
-
- Merchant submits ACCOUNTCHECK request.
- Trust Payments validates the request and contacts the bank.
- The acquiring bank will contact the card issuer to perform AVS and security code checks.
- Trust Payments receives results of the request and passes this back to the merchant.
- Merchant receives and interprets this response.

The customer’s account is not debited when an ACCOUNTCHECK request is performed.

ACCOUNTCHECK request
The fields required in an ACCOUNTCHECK request are the same as a standard AUTH request, except with the following differences:
- The baseamount can be “0”. A non-zero amount can be submitted – this will be inherited in any subsequent requests that reference this Account check as its parent, unless overridden with a new amount.
- Additional field credentialsonfile must be submitted with value “1”. (See below)
Field specification
Field | Format | Description | |
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credentialsonfile XPath: /operation/credentialsonfile |
Numeric (1) | This must be set to “1”, to indicate the customer agreed for the payment credentials to be stored for future transactions. See below for further information. |
You can submit any field that you can submit in an AUTH request and these will be inherited by any subsequent child requests. Click here to learn more.
The following is an example of an ACCOUNTCHECK request:
#!/usr/bin/python import securetrading stconfig = securetrading.Config() stconfig.username = "[email protected]" stconfig.password = "Password1^" st = securetrading.Api(stconfig) accountcheck= { "currencyiso3a": "GBP", "requesttypedescriptions": ["ACCOUNTCHECK"], "sitereference": "test_site12345", "baseamount": "0", "orderreference": "My_Order_123", "accounttypedescription": "MOTO", "pan": "4111111111111111", "expirydate": "12/2020", "securitycode": "123", "billingpremise": "789", "billingpostcode": "TE45 6ST", "credentialsonfile": "1" } strequest = securetrading.Request() strequest.update(accountcheck) stresponse = st.process(strequest) #stresponse contains the transaction response
<?php if (!($autoload = realpath(__DIR__ . '/../../../autoload.php')) && !($autoload = realpath(__DIR__ . '/../vendor/autoload.php'))) { throw new Exception('Composer autoloader file could not be found.'); } require_once($autoload); $configData = array( 'username' => '[email protected]', 'password' => 'Password1^', ); $requestData = array( 'currencyiso3a' => 'GBP', 'requesttypedescriptions' => array('ACCOUNTCHECK'), 'sitereference' => 'test_site12345', 'baseamount' => '0', 'orderreference' => 'My_Order_123', 'accounttypedescription' => 'MOTO', 'pan' => '4111111111111111', 'expirydate' => '12/2020', 'securitycode' => '123', 'billingpremise' => '789', 'billingpostcode' => 'TE45 6ST', 'credentialsonfile' => '1' ); $api = \Securetrading\api($configData); $response = $api->process($requestData); var_dump($response->toArray()); ?>
curl --user [email protected]:Password1^ <DOMAIN>/json/ -H "Content-type: application/json" -H "Accept: application/json" -X POST -d '{ "alias": "[email protected]", "version": "1.00", "request": [{ "currencyiso3a": "GBP", "requesttypedescriptions": ["ACCOUNTCHECK"], "sitereference": "test_site12345", "baseamount": "0", "orderreference": "My_Order_123", "accounttypedescription": "MOTO", "pan": "4111111111111111", "expirydate": "12/2020", "securitycode": "123", "billingpremise": "789", "billingpostcode": "TE45 6ST", "credentialsonfile": "1" }]}'
{"alias":"[email protected]","version":"1.00","request":[{"currencyiso3a":"GBP","requesttypedescriptions":["ACCOUNTCHECK"],"sitereference":"test_site12345","baseamount":"0","orderreference":"My_Order_123","accounttypedescription":"MOTO","pan":"4111111111111111","expirydate":"12\/2020","securitycode":"123","billingpremise":"789","billingpostcode":"TE45 6ST","credentialsonfile":"1"}]}
<?xml version='1.0' encoding='utf-8'?> <requestblock version="3.67"> <alias>[email protected]</alias> <request type="ACCOUNTCHECK"> <merchant> <orderreference>My_Order_123</orderreference> </merchant> <billing> <amount currencycode="GBP">0</amount> <postcode>TE45 6ST</postcode> <premise>789</premise> <payment> <pan>4111111111111111</pan> <securitycode>123</securitycode> <expirydate>12/2020</expirydate> </payment> </billing> <operation> <accounttypedescription>MOTO</accounttypedescription> <sitereference>test_site12345</sitereference> <credentialsonfile>1</credentialsonfile> </operation> </request> </requestblock>
Replace <DOMAIN> with a supported domain. Click here for a full list.
ACCOUNTCHECK response
After the request has been processed, you will receive a single response that contains the response to the ACCOUNTCHECK request:
{ u 'requestreference': u 'Ar2xj1hjr', u 'version': u '1.00', u 'response': [{ u 'transactionstartedtimestamp': u '2016-12-07 16:12:00', u 'livestatus': u '0', u 'issuer': u 'SecureTrading Test Issuer1', u 'dccenabled': u '0', u 'settleduedate': u '2016-12-07', u 'errorcode': u '0', u 'orderreference': u 'My_Order_123', u 'tid': u '27882788', u 'merchantnumber': u '00000000', u 'merchantcountryiso2a': u 'GB', u 'transactionreference': u '23-9-80023', u 'merchantname': u 'Test Merchant', u 'paymenttypedescription': u 'VISA', u 'baseamount': u '0', u 'accounttypedescription': u 'MOTO', u 'acquirerresponsecode': u '00', u 'requesttypedescription': u 'ACCOUNTCHECK', u 'securityresponsesecuritycode': u '2', u 'currencyiso3a': u 'GBP', u 'authcode': u 'TEST46', u 'errormessage': u 'Ok', u 'operatorname': u '[email protected]', u 'securityresponsepostcode': u '2', u 'maskedpan': u '411111######1111', u 'securityresponseaddress': u '2', u 'issuercountryiso2a': u 'US', u 'settlestatus': u '0', u 'credentialsonfile': u '1' }] }
array(3) { ["requestreference"] => string(9) "A4cenptwx" ["version"] => string(4) "1.00" ["response"] => array(1) { [0] => array(28) { ["transactionstartedtimestamp"] => string(19) "2016-12-09 11:04:29" ["livestatus"] => string(1) "0" ["issuer"] => string(26) "SecureTrading Test Issuer1" ["dccenabled"] => string(1) "0" ["settleduedate"] => string(10) "2016-12-09" ["errorcode"] => string(1) "0" ["baseamount"] => string(1) "0" ["tid"] => string(8) "27882788" ["merchantnumber"] => string(8) "00000000" ["securityresponsepostcode"] => string(1) "2" ["transactionreference"] => string(10) "72-9-80018" ["merchantname"] => string(13) "Test Merchant" ["paymenttypedescription"] => string(4) "VISA" ["orderreference"] => string(12) "My_Order_123" ["accounttypedescription"] => string(4) "MOTO" ["acquirerresponsecode"] => string(2) "00" ["requesttypedescription"] => string(12) "ACCOUNTCHECK" ["securityresponsesecuritycode"] => string(1)"2" ["currencyiso3a"] => string(3) "GBP" ["authcode"] => string(6) "TEST39" ["errormessage"] => string(2) "Ok" ["operatorname"] => string(23) "[email protected]" ["merchantcountryiso2a"] => string(2) "GB" ["maskedpan"] => string(16) "411111######1111" ["securityresponseaddress"] => string(1) "2" ["issuercountryiso2a"] => string(2) "US" ["settlestatus"] => string(1) "0" ["credentialsonfile"] => string(1) "1" } } }
{"requestreference":"W23-q3wa45ge","version":"1.00","response":[{"transactionstartedtimestamp":"2016-12-07 16:16:39","livestatus":"0","issuer":"SecureTrading Test Issuer1","dccenabled":"0","settleduedate":"2016-12-07","errorcode":"0","baseamount":"0","tid":"27882788","merchantnumber":"00000000","securityresponsepostcode":"2","transactionreference":"23-9-80024","merchantname":"Test Merchant","paymenttypedescription":"VISA","orderreference":"My_Order_123","accounttypedescription":"MOTO","acquirerresponsecode":"00","requesttypedescription":"ACCOUNTCHECK","securityresponsesecuritycode":"2","currencyiso3a":"GBP","authcode":"TEST53","errormessage":"Ok","operatorname":"[email protected]","merchantcountryiso2a":"GB","maskedpan":"411111######1111","securityresponseaddress":"2","issuercountryiso2a":"US","settlestatus":"0","credentialsonfile":"1"}],"secrand":"NunVEQ"}
<?xml version='1.0' encoding='utf-8'?> <responseblock version="3.67"> <requestreference>X575647667</requestreference> <response type="ACCOUNTCHECK"> <merchant> <merchantname>Test Merchant</merchantname> <orderreference>My_Order_123</orderreference> <tid>27882788</tid> <merchantnumber>00000000</merchantnumber> <merchantcountryiso2a>GB</merchantcountryiso2a> <operatorname>[email protected]</operatorname> </merchant> <transactionreference>16-9-1</transactionreference> <billing> <amount currencycode="GBP">0</amount> <payment type="VISA"> <issuer>SecureTrading Test Issuer1</issuer> <issuercountry>US</issuercountry> <pan>411111######1111</pan> </payment> <dcc enabled="0"/> </billing> <authcode>TEST53</authcode> <live>0</live> <error> <message>Ok</message> <code>0</code> </error> <timestamp>2013-01-16 10:48:17</timestamp> <acquirerresponsecode>00</acquirerresponsecode> <security> <address>2</address> <postcode>2</postcode> <securitycode>2</securitycode> </security> <settlement> <settleduedate>2013-01-16</settleduedate> <settlestatus>0</settlestatus> </settlement> <operation> <accounttypedescription>MOTO</accounttypedescription> <credentialsonfile>1</credentialsonfile> </operation> </response> <secrand>bByuPvGz9Hcm</secrand> </responseblock>
Handling the response
- Ensure that the errorcode value returned is “0”, indicating success. (You must not store credentials if an error has occurred)
- Check the values returned in the securityresponseaddress, securityresponsepostcode and securityresponsesecuritycode fields and only proceed if business requirements have been satisfied. (More info provided below)

Field | Format | Description | |
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securityresponseaddress XPath: /security/address |
Numeric (1) | “0” Not given – Your system did not provide the acquiring bank the information required to perform this check.
“1” Not checked – The acquiring bank did not perform this check on the information you provided in the request. “2” Matched – The information you provided in the request matches the information obtained by the acquiring bank, from the customer’s payment issuer. “4” Not matched – The information you provided in the request does not match the information obtained by the acquiring bank, from the customer’s payment issuer. |
![]() |
securityresponsepostcode XPath: /security/postcode |
Numeric (1) | |
![]() |
securityresponsesecuritycode XPath: /security/securitycode |
Numeric (1) |