CAllCrmInvoice::GetUserFields

static function GetUserFields($langID = false)
{
	global $USER_FIELD_MANAGER;
	$result = $USER_FIELD_MANAGER->GetUserFields(self::$sUFEntityID, 0, $langID);

	// remove invoice reserved fields
	foreach (self::GetUserFieldsReserved() as $ufId)
		if (isset($result[$ufId]))
			unset($result[$ufId]);

	return $result;
}