Service::answerError

static function answerError($code = null, $text = null)
{
	if (!$code)
	{
		$code = self::ANSWER_ERROR_SYSTEM;
	}

	if (!$text)
	{
		$errorMessages = array(
			self::ANSWER_ERROR_SYSTEM => 'Error.',
			self::ANSWER_ERROR_NO_CODE => 'Parameter `code` not found.',
			self::ANSWER_ERROR_NO_EXT_ID => 'Parameter `externalId` not found.',
			self::ANSWER_ERROR_NO_SEC_CODE => 'Parameter `sec` not found.',
			self::ANSWER_ERROR_WRONG_SEC_CODE => 'Wrong `sec` parameter.',
		);

		$text = $errorMessages[$code];
	}

	self::answer(array(
		'error' => array('code' => $code, 'text' => $text),
		'data' => array()
	));
}