400 - Bad Value: purchase_currency Your account at Klarna doesn't seem to be configured for the currency used in your store. What currency did you select when you signed up with Klarna? If you need support, you should email your regions Klarna Merchant contact.
401 - Unauthorized If you receive this error message it usually means that you are using your credentials for the wrong plugin. It could also mean that the username and/or password is incorrect, try copying & pasting instead of typing in directly and double check for whitespace. If you need support, you should email your regions Klarna Merchant contact.
403 - Invalid_Operations (1). 403 error code means the Klarna credentials authenticate successfully (so Klarna API credentials/username & password are correct) but you haven't selected the Klarna products to enable these credentials to work yet. You should be able to select products in the Klarna Merchant Portal, but if you need assistance, you should email your regions Klarna Merchant contact. (2). 403 error code could also mean the you are using the wrong plugin (KP) when your have credentials configured for KCO.
404 - Not found Where credentials were changed during the order. Please make sure to start a new browser session after changing credentials. If you need support, you should email your regions Klarna Merchant contact.
405 - Method not allowed Merchants are encountering issues when their Klarna credentials are a valid username & password, but aren't correctly configured for the market they are using them for. Check which product (KP or KCO) you signed up with at Klarna. If you need support, you should email your regions Klarna Merchant contact.
Common error codes from our plugin:
Klarna Checkout error (Failed to load Klarna Checkout template file.) This means that there is another plugin or theme that overrides and makes our template file not to load correctly in the checkout. This error message can also be shown when your WooCommerce Checkout page is missing the [woocommerce_checkout] shortcode.
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