1Introduction

This manual describes how to install, configure and use the payment module for PrestaShop and TWINT.

Before you begin with the installation make sure you have all of the necessary data. You will need:

• TWINT UUID of your shop
• TWINT Certificate Password (created by you)
• TWINT Certificate
• PrestaShop Payment module from sellxed.com/shop
• Login data to your Server and Shop

Note that you must use at least PHP version 5.6 for our plugins. PHP 8 or higher is currently not supported.

1.1Installation Process

This document contains all information necessary to install the module. Strictly follow the steps on the check list when setting up the module. This is the only way to ensure a safe usage in compliance with all security regulations.

1. Before beginning with the installation you will need to register in the TWINT dealer portal
2. Configuration of the Main Module
3. Configuration of the accepted payment methods and the respective authorization methods
4. Conducting a test order

1.2System Requirements

• PHP Version: 5.4.x or higher
• PrestaShop Version: 1.6.x or higher
• OpenSSL: Current version with support for TLS 1.2 or higher.
• fsockopen: The PHP function fsockopen must be enabled. The plugin must be able to connect to external systems over the Internet.
• PHP Functions: All common PHP functions must be enabled.

2Configuration of the TWINT - Dealer Portal

2.1Certificate and UUID of your Store Download

You will receive the necessary access data directly in the dealer portal of TWINT. Log in to the corresponding location in the TWINT Dealer Portal.

2.1.1Entering the SystemID

You will receive the TWINT UUID in the initial email from TWINT. It is important that you save the UUID as we need it to set up your account. Copy the TWINT UUID and paste it into the corresponding location in the Main Module.

2.1.2Converting the Certificates

The certificate will be retrieved and ordered automatically during the process of creating your store in the dealer portal of TWINT. If you have forgotten your certificate password or are having problems with generating the certificate please contact TWINT directly.

You will need to convert the certificate into a .pem file first. To do so you can use a service (but we strongly advise against it as you should not pass along your certification password to anyone except customweb).

You may want to use openssl to convert the certificates. Openssl is preinstalled on most unix based systems. On Windows it can be installed. The conversion can be done as following openssl pkcs12 -in certificate.pfx -out certificate.pem.

As soon as you are in possession of the .pem certificate, copy the complete content of the .pem file (certificate incl. -----BEGIN CERTIFICATE----- and -----END RSA PRIVATE KEY-----) into the text field.

Make sure you don't forget to also fill in the password into the main module.

2.1.3Time Out Settings

Technically, TWINT does not send payment notifications to your shop. The server pulls the result of the transaction periodically. In order for this to work you need to have set the Server Polling Time Out. However the standard values shouldn't be altered. Make sure that you have set up the Cron Job in your module. You will find more information in the manual further down.

2.2Configuration of the Payment Methods

The payment method TWINT will also be delivered in the module. You will find it in the configuration of the payment methods in your shop. Activate this payment method in order for it to be available for your customers in your shop.

Further information regarding the configuration of the payment methods and the implementation of the different settings can be found here.

3Module Installation and Update in the PrestaShop Shop

3.1Installation

At this time you should already be in possession of the module. Should this not be the case, you can download the necessary files in your customer account in the sellxed shop (Menu "My Downloads Downloads"). In order to install the module in your shop, please carry out the following steps:

1. Download the plugin. The download can be found in your sellxed.com account under "My Downloads".
2. Unzip the archive you have just downloaded.
3. In the unzipped folder navigate to the folder "files"
4. For some shops there are different versions of the plugin provided. If this is the case open the folder which corresponds to your shop version.
5. Using your preferred FTP client upload entire content of this folder into the root directory of your shop. For some shops there is a specific folder containing the plugins. If that is the case upload the plugin into this folder. Make sure that the folders aren't replaced but merely merged.
6. If you haven't yet done so, log back into your shop.

3.2Updates and Upgrades

You have direct and unlimited access to updates and upgrades during the duration of your support contract. In order to receive constant information about available updates we ask you to subscribe to our RSS feed that we publish for your module.

More information regarding the subscription of this RSS feed can be found under: http://www.sellxed.com/en/updates_upgrades.

We only recommend an update if something doesn't work in your shop, if you want to use new feature or if there is a necessary security update.

3.2.1Update Checklist

We ask you to strictly comply with the checklist below when doing an update:

1. Always do a backup for your database and your files in your shop
2. Use always a test system to test the update process.
3. Wait until all the files are copied to the shop, clear the cache if there is one in your shop and then visit the configuration page of the main module so that the update process will be initialized.

Depending on the version it could be that the database has to be migrated. We recommend you therefore, to perform the updates in times when the shop is not visited too frequently by your customers.

3.2.2Update Instructions

Please always read the update instruction. Those instructions can be found in the changelog. If there are no special remarks, you can proceed by just overwriting the files in your system.

4Module Configuration in the PrestaShop Shop

The configuration consists of two steps. The first step is the configuration of the main module with all the basic settings (cf. Configuration of the Main Module). During the second step you can then carry out individual configurations for each payment method . This allows for full flexibility and perfect adaptation to your processes.

4.1Configuration of the Main Module

You will find the settings for the module under Modules, in the group Checkout , TWINT Integration. Install the module and open the configuration mask by clicking Configure. Enter the individual options such as described above in the configuration of the administration interface of TWINT. You will find information on the individual options directly in the additional texts in the module

4.2Configuration of Payment Methods (for PrestaShop 1.6)

After you have installed the main module you can install the corresponding payment methods. To do so you have to install the desired payment methods under Modules in the group of Payments and Gateways. You can save individual settings for each payment method and thereby optimally adapt the payment to your processes. The most central are explained in more detail in this manual.

4.3Configuration of Payment Methods (for PrestaShop 1.7)

After you have installed the main module you can install the corresponding payment methods. To do so you have to install the desired payment methods under Modules > Module Catelog. You can save individual settings for each payment method and thereby optimally adapt the payment to your processes. The most central are explained in more detail in this manual.

4.4Direct Capturing of Transactions

The option "Capture" allows you to specify if you wish to debit payments directly or if you first wish to authorise them and then debit the payment at a later point.

Depending on your acquiring contract, a reservation is only guaranteed for a specific period of time. Should you fail to debit the payment within that period, the authorisation may therefore no longer be guaranteed. Further information on this process can be found below.

4.5Uncertain Status

You can specifically label orders for which the money is not guaranteed to be received. This allows you to manually control the order before shipment.

4.5.1Setting the order state

For each payment method you may select in which state the order should be set to depending on the booking state. This is the initial state of the order.

4.6Optional: Validation

Note: It can be that this option is not visible in your module. In this case just ignore this section.

With the option 'Validation' you can define the moment when the payment method should be made visible to the customer during the checkout process. This setting is relevant for modules where the usage depends on the customer's compliance with specific preconditions. For example, if a solvency check has to be carried out or if the payment method is only available in certain countries. In order for the credit check or address validation to also work with European characters, the charset of the "Blowfish mode" must be set to "UTF-8" for certain PSP settings.

You have the choice between these options:

• Validation before the selection of the payment method: A validation verification is carried out before the customer selects the payment method. If the customer does not fulfill the requirements, the payment method is not displayed
• Validation after selection of the payment method: The verification of the compliance occurs after the selection of the payment method and before the confirmation of the order
• During the authorisation: The validation verification is carried out by TWINT during the authorisation process. The payment method is displayed in any case

4.6.1Usage of the Integrated Multishop Functionality of PrestaShop

The payment module supports the multishop feature of PrestaShop. No further modifications are necessary. The module automatically recognizes the shop the order belongs to. In order for the multishop functionality to work, it is, however, necessary that the individual sub-shops within PrestaShop have been configured correctly.

5Settings / Configuration of Payment Methods

5.1General Information About the Payment Methods

The plugin contains the most common payment methods. In case a desired payment method is not included per default, please contact us directly.

In order to be able to use a payment method, it must be activated in your account with TWINT as well as in your shop. Information about the configuration of the payment methods can be found further above.

Below you can find important information for specific payment methods that deviate from the standard process.

5.2Information on Payment Status

For each payment method you can define an initial payment status (status for authorized payments etc.). You hereby define the payment status for each state depending on the processing type of the order (captured, authorized, etc.). It's the initial status which the order assumes. Depending on the mutation carried out by you, the status can change.

5.2.1Order status "pending" / imminent payment (or similar)

Orders with the status 'pending TWINT' are pending orders. Orders are set to that status if a customer is redirected in order to pay but hasn't returned successfully or the feedback hasn't reached your shop yet (Customer closed window on the payment page and didn't complete payment). Depending on the payment method these orders will automatically be transformed into cancelled orders and the inventory will be cleared (so long as the Cronjob is activated). How long this takes depends on the characteristics of the payment method and cannot be configured.

If you have a lot of pending orders it usually means that the notifications from your webserver to TWINT are being blocked. In this case check the settings of your firewall and ask the Hoster to activate the IPs and User Agents of TWINT.

5.2.2Order status "cancelled"

Orders with the status "cancelled" have either been set to that status automatically due to a timeout, as described above, or have been cancelled directly by the customer.

6The Module in Action

Below you will find an overview of the most important features in the daily usage of the TWINT module.

6.1Refunds

You can create refunds for charged transactions and transmit them to TWINT automatically. In order to do this, open the invoice for a captured order. By clicking on "Credit Memo", a new dialogue for refunds opens. Adjust the amount you would like to refund and click "Refund" to submit it to TWINT.

The process demonstrated by screenshots:

Figure 6.1: 1. Open the invoice

Figure 6.1: 2. Click on Credit Memo - Please note that the order has to be opened first.

Figure 6.1: 3. Adjust the amount (cf. below Refund to based on quantity or any amount)

Figure 6.1: 4. Click on Refund to transmit.

Figure 6.1: Wait until the refund is confirmed.

6.1.1Refund Based on Quantity

You can create refunds based on the product quantity by adjusting the number of products you wish to refund in the credit memo dialogue.

You can create refunds until the complete original amount has been credited. The order status switches to complete automatically.

Figure 6.1: Refund overview

6.1.2Refunding Customized Amounts

Magento also allows you to define any amount to refund. In order to do this, follow these steps:

1. Open the Credit Memo Dialogue as described above
2. Set the number of products you wish to refund to 0
3. Enter any amount in the field Adjustment Refund

6.1.3Deducting a Processing Fee for Refunds

You can charge a processing fee for the refunds by following these steps:

1. Open the Credit Memo Dialogue as described above
2. In the field Adjustment Fee, define any amount as a processing fee.

6.2Capturing of Orders

In order to be able to capture orders you must make sure that you have set the option 'Capturing' to 'deferred' in the payment method configuration.

Transactions can be captured in different ways. The different options are explained below.

6.2.11. Via Orders > TWINT Transactions

You can view all transactions in the transaction table under Orders > TWINT transactions"

Figure 6.1: 1. View Transactions via Orders > TWINT transactions.

Open the order and then click on the small magnifying glass in den transaction information overview. By clicking Capture button, you get into the following context.

Figure 6.1: Invoice capturing in PrestaShop

Enter the amount and quantity that you wish to capture from the customer's authorization. By clicking Capture a direct capturing of the order occurs with TWINT.

6.2.22. Capture the transaction through the order and the TWINT transaction tab

Open the order and then click on the small magnifying glass in the TWINT transactions overview.

Figure 6.1: Open order and view the transaction tab.

A window will then drop down. Enter the amount of your choice that you wish to capture from the customer's authorization. By clicking Capture a direct capturing of the order occurs with TWINT.

Figure 6.1: 2. Transaction details in the transaction tab of a specific order.

By clicking Capturing button, you get into the following context.

Figure 6.1: Deferred/Manual capture of transactions within PrestaShop

Enter the amount or quantity choice that you wish to capture from the customer's authorization. By clicking Capture a direct capturing of the order occurs with TWINT.

6.3Useful Transaction Information on the Order

In each order, processed via our module, you can find an overview of the most important information about the transaction as well as a transaction history.

Figure 6.1: Transaction information within PrestaShop.

6.4Refunds

You can refund already captured transactions and automatically transmit them to TWINT. In order to to so, open the order. You have two alternatives for refunding the money. Either you use the refund tool or the partial refund process of PrestaShop. Both processes are explained in this passage.

6.4.11. Transactiontable via Orders > TWINT transactions

You can view all transactions in the transaction table under "Orders > TWINT transactions"

Figure 6.1: 1. transaction table via rrders > TWINT transactions.

Open the order and then click on the small magnifying glass in den transaction information overview. By clicking Refund button, you get into the following context.

Figure 6.1: Refund of transactions within PrestaShop.

Just like for the capturing, you open the order and click on the magnifying glass next to the order of your choice. Enter any refund amount of your choice in the field provided for this purpose. By clicking refund the refund request will directly be sent to TWINT and the specified amount will be credited on the customer's credit card.

Please note that you can't refund more than 100% of the original amount.

6.4.22. Refund the transaction through the order and the TWINT transaction tab

Open the order and then click on the small magnifying glass in the TWINT transactions overview.

Figure 6.1: Open order and view the transaction tab.

By clicking Refund button, you get into the following context.

Figure 6.1: 2. transaction details in the transaction tab of a specific order.

By clicking Refund button, you get into the following context.

Figure 6.1: Refund of the transaction within PrestaShop.

Enter any refund amount of your choice in the field provided for this purpose. By clicking refund the refund request will directly be sent to TWINT and the specified amount will be credited on the customer's credit card.

Please note that you can't refund more than 100% of the original amount.

6.4.33. Refund with the PrestaShop internal/default functionality.

You can carry out refunds with the Partial Refund Process of PrestaShop based on the product quantity. After having opened the order, click on Partial Refund in the top right corner. The browser will scroll down and you can specify the amount of the partial refund. If you wish, you can also directly add the item(s) to the stock. In order to do so, click on the corresponding check-box. By clicking Partial Refund, a new window opens up.

Figure 6.1: Refund of transactions within PrestaShop.

In the following window, click 'Yes' in order to transmit the refund to TWINT and the specified amount will be credited to the customer's credit card.

Figure 6.1: Confirm the transaction refund in PrestaShop.

Please note that you can't refund more than 100% of the original amount.

Executing a refund will not change the status of the order.

6.5One Page Checkout

The checkout of PrestaShop can be modified and reduced to one step. Our module support the standard OnePageCheckout of PrestaShop. No guarantee can be made in regards to the compatibility with third party modules.

You can activate the standard checkout by going to Preferences, Orders. Choose the option 'one-page checkout' in the drop-down menu for Order-process type.

6.6Setting up Cron Job

In order to activate the time-controlled functions of the plugin (such as update service, deleting pending orders, etc.) set up a time-controlled request in your hosting provider backend using the URL which you will now find via Modules > TWINT in the tab "Extended Information". Invoking it regularly will trigger the actions.

Here we suggest you use a Cron Engine like for example EasyCron. This allows you to open the file ( URL ) with an external service.

7Testing

Before switching from test to live mode it is important that you test the module extensively.

7.1Test Data

7.2Testing with TWINT

Make sure you are in the Live Mode and carry out a test transaction with your smart phone. For the tests we recommend you set the booking in the configuration of the payment method to 'delayed' so that the money won't be debited directly. Testing in test mode is only possible if you have the special Twint developer app. This needs to be setup for you by Twint directly. If you are interested in this please contact Twint.

8Errors and their Solutions

You can find detailed information under http://www.sellxed.com/en/faq. Should you not be able to solve your problem with the provided information, please contact us directly under: http://www.sellxed.com/en/support

8.1Modul Performance

Depending on your server specs it could be that the module results to performance issues in your store. In this case we suggest to do the following:

• Deactivate the PrestaShop Cache. We often saw already better results when the cache was disabled.
• Deactivate the PrestaShop displayBackOfficeHeader hook. For this go to > Modules > Hooks > and disable the hook TWINT Integration under the displayBackOfficeHeader Menu.

In case you want to undo the changes above you will need to re-install the base module again.

Figure 8.1: Disable the PrestaShop Hook.

8.2The Referrer URL appears in my Analytics Tool

When a customer and the notification are redirected via Header Redirection, the TWINT Referrer URL might appear in your Analytics Tool thus hiding the original traffic source. However, most Analytic Tools are able to minimize this problem.

In case you are using Google Analytics as reporting tool, this step by step guide may help you to exclude the URLs: under bullet point 4.

9Compatibility with Third-Party Plugins

The plugins listed below are compatible with our payment modules and allow you to handle certain tasks in an easier way.

9.1Fee's and discount's within PrestaShop

To configure a TWINT payment gateways based fee and discount you will need the following 3rd-Party plugin.

• Payment Fees

9.2Birthday and gender in PrestaShop

For certain payment service providers it is necessary to check the birthday and the gender of a customer. PrestaShop does not check this by default. Information on how to enable those checks can be found here:

• Birthday
• Gender

10Error Logging

The module will log different unexpected errors or information depending on the configured level. If there is any issue with the module, this log can help identify the cause.

10.1Log Levels

You can configure the log level in the TWINT settings.

• Off: Nothing is logged. (Default)
• Error: Logs unexpected errors only.
• Info: Logs extended information.
• Debug: Logs information helpful for debugging.

10.2Log Location

In PrestaShop 1.5 the FileLogger is used. The log file is stored in the log folder of your installation. Please make sure the path exists and it is writable by the webserver. (Default Path: {shopRootDirectory}/log/)

In PrestaShop 1.6 and newer the default PrestashopLogger is used and are therefore stored in the database. The log message are visible in the PrestaShop backend under the menu item Advanced Parameters > Logs.

11Advanced Information

This section of the manual is for advanced usage of the module. The content is for advanced users with special requirements. Everything in this section is optional and not required for the daily usage of the module.

11.1Transaction Object

This section describes how to extract information from a transaction, if you need it for further processing. E.g. you require more information of the transaction for further processing an order in your ERP system.

The code snippets in this section assume your script resides in the root folder of the shop with the default shop folder structure.

require(dirname(__FILE__).'/config/config.inc.php');

require_once _PS_ROOT_DIR_.'/modules/twintcw/twintcw.php';
require_once _PS_ROOT_DIR_.'/modules/twintcw/lib/TwintCw/Entity/Transaction.php';

$transactionById = TwintCw_Entity_Transaction::loadById($transactionId);
$transactionObject = $transactionById->getTransactionObject();

$transactionsByOrderId = TwintCw_Entity_Transaction::getTransactionsByOrderId($orderId);
foreach($transactionsByOrderId as $transaction){
	$transactionObject = $transaction->getTransactionObject();
	//Do something with each object
}