Exception when calling CheckoutApi->createCheckout: [HTTP/2 400] {"errors":[{"category":"INVALID_REQUEST_ERROR","code":"IDEMPOTENCY_KEY_REUSED","detail":"The idempotency key can only be retried with the same request data.","field":"idempotency_key"}]}

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Artist: Emily Faludy
Item: Summer's Day, Porthcurno
Price: £2150.00

Shipping: Free Shipping
Total: £2150