Cashbox::validate

public function validate()
{
	$fields = $this->fields;
	unset($fields['OFD_SETTINGS']);

	$result = $this->validateFields($fields);

	$ofd = $this->getOfd();
	if ($ofd)
	{
		$r = $ofd->validate();
		if (!$r->isSuccess())
		{
			$result->addErrors($r->getErrors());
		}
	}

	return $result;
}