CCrmFieldMulti::Update

public function Update($ID, $arFields, array $options = null)
{
	$err_mess = (self::err_mess()).'
Function: Update
Line: ';

	$ID = (int)$ID;
	if($ID <= 0)
	{
		return false;
	}

	if(isset($arFields['VALUE']))
	{
		$arFields['VALUE'] = trim($arFields['VALUE']);
	}

	if (!$this->CheckFields($arFields))
		return false;

	$arFields_u = Array(
		'TYPE_ID'	=> $arFields['TYPE_ID'],
		'VALUE_TYPE'=> $arFields['VALUE_TYPE'],
		'COMPLEX_ID'=> $arFields['TYPE_ID'].'_'.$arFields['VALUE_TYPE'],
		'VALUE'		=> $arFields['VALUE'],
	);
	$strUpdate = $this->cdb->PrepareUpdate('b_crm_field_multi', $arFields_u);
	if (!$this->cdb->Query("UPDATE b_crm_field_multi SET $strUpdate WHERE ID=$ID", false, $err_mess.__LINE__))
		return false;

	if(is_array($options) && (!isset($options['ENABLE_NOTIFICATION']) || $options['ENABLE_NOTIFICATION']))
	{
		$info = $this->GetOwerInfo($ID);
		if(is_array($info) && isset($info['ENTITY_ID']) && isset($info['ELEMENT_ID']))
		{
			$entityTypeId = CCrmOwnerType::ResolveID($info['ENTITY_ID']);
			$entityId = (int)$info['ELEMENT_ID'];

			//region Register volatile duplicate criterion fields
			DuplicateCommunicationCriterion::processMultifieldsChange($entityTypeId, $entityId);
			DuplicateVolatileCriterion::register(
				$entityTypeId,
				$entityId,
				[FieldCategory::MULTI]
			);
			//endregion Register volatile duplicate criterion fields
		}
	}

	if ($arFields_u['TYPE_ID'] === static::PHONE)
	{
		$curData = FieldMultiPhoneCountryTable::getDataByMultiFieldId([$ID])[0] ?? [];
		$valueCountryCode = static::fetchCountryCode($arFields_u['TYPE_ID'], $arFields);
		if (empty($valueCountryCode))
		{
			if (isset($curData['ID']))
			{
				FieldMultiPhoneCountryTable::delete($curData['ID']);
			}
		}
		else
		{
			if (isset($curData['ID']))
			{
				FieldMultiPhoneCountryTable::update($curData['ID'], ['COUNTRY_CODE' => $valueCountryCode]);
			}
			else
			{
				FieldMultiPhoneCountryTable::add([
					'FM_ID' => $ID,
					'COUNTRY_CODE' => $valueCountryCode,
				]);
			}
		}
	}

	return $ID;
}