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Svea integration
It is now possible to pay and refund orders while Payment and refunds using Svea as the payment provider is supported.
Regarding refunds: Currently, Svea does not support "idempotency key". This means that we will not know if the refund was processed successfully at Svea in case the request times out/fails. The danger here is that there will be cases where the refund was, in fact, not processed correctly and we won't find out about it until a customer comes back to us with feedback.
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