protected function _validateDebitNote($debitInformation)
    {
        $debitInformation = $this->_cleanDebitInformation($debitInformation);
        $bankCode = $debitInformation['lsblz'];
        $accountNumber = $debitInformation['lsktonr'];
        $sepaValidator = oxNew(SepaValidator::class);

        if ($sepaValidator->isValidBIC($bankCode)) {
            $validateResult = true;
            if (!$sepaValidator->isValidIBAN($accountNumber)) {
                $validateResult = self::INVALID_ACCOUNT_NUMBER;
            }
        } else {
            $validateResult = self::INVALID_BANK_CODE;
            if (!\OxidEsales\Eshop\Core\Registry::getConfig()->getConfigParam('blSkipDebitOldBankInfo')) {
                $validateResult = $this->_validateOldDebitInfo($debitInformation);
            }
        }

        return $validateResult;
    }