if ($fallback) // if not found return refline with empty prefix
$sql .= " UNION SELECT * FROM ".TB_PREF."reflines WHERE trans_type=".db_escape($type)." AND `prefix`=''";
$ret = db_query($sql, "cannot check reference line id");
if ($fallback) // if not found return refline with empty prefix
$sql .= " UNION SELECT * FROM ".TB_PREF."reflines WHERE trans_type=".db_escape($type)." AND `prefix`=''";
$ret = db_query($sql, "cannot check reference line id");