Taking payment with Klarna 

1. Navigate to the Sell screen and process a sale as usual.

2. When presented with your payment options, select Klarna.

   You won't be able to process a split or multi-payment with Klarna when making a sale. This means your customer will not be able to complete a purchase with different payment types (for example, using both cash and Klarna).

3. Once you have selected Klarna, a window will display prompting the customer to scan the QR code or enter the customer's phone number.
4. When the customer finishes the instructions prompted on the app, the sale will be complete.

Refunding a Klarna Sale

Product exchanges are disallowed for sales with Klarna payments. You can partially refund a sale by returning a single product, but you won't be able to refund the partial price of a product paid for with Klarna.

To refund a sale that was paid for using Klarna, follow the usual Retail POS returns process:

1. Navigate to Sales History > Process Returns > and navigate to the previous Klarna sale.
2. Select the Klarna sale > Return. This will display the sale on the Sell screen. 
3. On the Sell screen, click Return >  and select Klarna as the payment type.
4. This will process 100% of the amount paid to you by Klarna and return the item to stock.