OpportunityField::resolveByValue

public function resolveByValue(&$seedOpportunity, &$targetOpportunity): bool
{
	if (parent::resolveByValue($seedOpportunity, $targetOpportunity))
	{
		return true;
	}

	$seed = $this->getSeed();
	$target = $this->getTarget();

	$seedId = isset($seed['ID']) ? (int)$seed['ID'] : 0;
	$targetId = isset($target['ID']) ? (int)$target['ID'] : 0;

	$dataSourceClassName = '';
	switch ($this->entityTypeId)
	{
		case \CCrmOwnerType::Lead:
			$dataSourceClassName = '\CCrmLead';
			break;
		case \CCrmOwnerType::Deal:
			$dataSourceClassName = '\CCrmDeal';
			break;
		default:
			throw new \Bitrix\Main\NotSupportedException(\CCrmOwnerType::ResolveName($this->entityTypeId).' is not supported');
	}

	if (isset($seed['PRODUCT_ROWS']) && is_array($seed['PRODUCT_ROWS']))
	{
		$seedProductRows = $seed['PRODUCT_ROWS'];
	}
	else
	{
		$seedProductRows = $dataSourceClassName::LoadProductRows($seedId);
		$seed['PRODUCT_ROWS'] = $seedProductRows;
		$this->setNewSeedValue($seedProductRows, 'PRODUCT_ROWS');
	}

	if (isset($target['PRODUCT_ROWS']) && is_array($target['PRODUCT_ROWS']))
	{
		$targProductRows = $target['PRODUCT_ROWS'];
	}
	else
	{
		$targProductRows = $dataSourceClassName::LoadProductRows($targetId);
		$target['PRODUCT_ROWS'] = $targProductRows;
		$this->setNewTargetValue($seedProductRows, 'PRODUCT_ROWS');
	}

	$seedIsManualOpportunity = isset($seed['IS_MANUAL_OPPORTUNITY']) && $seed['IS_MANUAL_OPPORTUNITY'] === 'Y';
	$targIsManualOpportunity = isset($target['IS_MANUAL_OPPORTUNITY']) && $target['IS_MANUAL_OPPORTUNITY'] === 'Y';

	if(
		!$seedIsManualOpportunity &&
		!$targIsManualOpportunity &&
		(!empty($seedProductRows) || !empty($targProductRows)))
	{
		//Opportunity is depends on Product Rows. Product Rows will be merged in innerMergeBoundEntities
		return true;
	}

	return false;
}