Created: October 29, 2025
Updated: October 29, 2025
IMPORTANT NOTE: Klarna is currently for straight sales only. Subscription orders are not supported. Additionally, Klarna only supports REFUNDS not VOIDS.
NOTE: It is important that you add the payment type "Klarna" to the Campaigns you will use the Klarna Gateway on.
For more information on this Gateway click https://www.klarna.com/us/
To configure Klarna into your sticky.io CRM, you will go to Payments>Gateways, under ACTIONS select Add New Provider Profile. Select the type = Payment/Gateway and select Klarna from the drop down. Fill out the gateway parameters which are outlined below and click “Save”.
To send a Klarna order to sticky.io - Send a normal new order request with card type = klarna and include alt_pay_return_url (for klarna to redirect back to your website). Make sure to include all the customers details in the New Order API request. Make sure to not use AJAX and do not send any headers with your new order request. All values are obtained from the front end communications with Klarna. Refer to Klarna's Integration documentation for more information on the front end implementation.
These parameters are briefly described here for your reference:
Alias: name that you will assign to the gateway. This is for internal purposes only; it helps you identify a specific gateway account among several of them in your CRM.
Store ID: This will be provided to you by Klarna
API Username: This will be provided to you by Klarna
API Password: This will be provided to you by Klarna
Currency: Klarna currently supports dozens of currencies. Click the drop down when setting up the profile for the full list.
Test Mode: Set to YES if you would like to use this gateway in test mode.
There are 2 Required Fields on the Merchant Account Details tab.
*Descriptor - This will be the MID Descriptor
*Customer Service Number - The customer service number assigned to the MID
There is 1 Required Field on the Limits and Fees tab
*Global Monthly Cap - This will be the sales amount allowed monthly on this MID
To maximize the efficiency of sticky.io Reporting Analytics we suggest you take a moment and fill out the rest of the fields. These will all be used in sticky.io’s profitability reports.
For field definitions on all of the fields on the Merchant Account Details Tab and the Limits & Fees Tab - click here- overview of gateway providers
Once your gateway profile has been created, then you will go through your campaigns and assign the gateway to the corresponding campaign(s).