{
  "error": {
    "type": "invalid_request_error",
    "code": "parameter_missing",
    "message": "Missing required parameter: amount",
    "param": "amount",
    "request_id": "req_abc123"
  }
}

try {
  const payment = await plexy.payments.create({ /* ... */ });
} catch (error) {
  switch (error.type) {
    case 'card_error':
      // Show message to customer
      displayError(error.message);
      break;

    case 'invalid_request_error':
      // Log and fix integration
      console.error('Integration error:', error.code, error.param);
      break;

    case 'authentication_error':
      // Check API key configuration
      console.error('Auth error:', error.code);
      break;

    case 'api_error':
      // Retry with exponential backoff
      await retryWithBackoff(() => createPayment());
      break;
  }
}