Mryntu

We are facing issues - https://prnt.sc/mgdybf why we are not able to remove the Deal and Pre Owned category.

Could not save product "26652" with position 0 to category 435

What is this error message about? How to solve this issue?

Regards
Rachna

Update

Some people have faced this issue already and have a solution. Check these posts

Magento2: Could not save product "330664" with position 0 to category 3567

https://github.com/magento/magento2/issues/8970

The error is from the CategoryLinkRepository File from module-catalog which handles the save functionality. Check your exception log for more details, which tells you exactly why you couldn't save the product. Hope am pointing you to the right direction. Check also deleteByIds method, it can be the potential cause of this issue.

/**
 * @inheritdoc
 */
 public function deleteByIds($categoryId, $sku)
 
 $category = $this->categoryRepository->get($categoryId);
 $product = $this->productRepository->get($sku);
 $productPositions = $category->getProductsPosition();

 $productID = $product->getId();
 if (!isset($productPositions[$productID])) 
 throw new InputException(__('Category does not contain specified product'));
 
 $backupPosition = $productPositions[$productID];
 unset($productPositions[$productID]);

 $category->setPostedProducts($productPositions);
 try 
 $category->save();
 catch (Exception $e) 
 throw new CouldNotSaveException(
 __(
 'Could not save product "%product" with position %position to category %category',
 [
 "product" => $product->getId(),
 "position" => $backupPosition,
 "category" => $category->getId()
 ]
 ),
 $e
 );
 
 return true;
 

magentovendormagentomodule-catalogModelCategoryLinkRepository.php

/**
 * @inheritdoc
 */
 public function save(MagentoCatalogApiDataCategoryProductLinkInterface $productLink)
 
 $category = $this->categoryRepository->get($productLink->getCategoryId());
 $product = $this->productRepository->get($productLink->getSku());
 $productPositions = $category->getProductsPosition();
 $productPositions[$product->getId()] = $productLink->getPosition();
 $category->setPostedProducts($productPositions);
 try 
 $category->save();
 catch (Exception $e) 
 throw new CouldNotSaveException(
 __(
 'Could not save product "%1" with position %2 to category %3',
 $product->getId(),
 $productLink->getPosition(),
 $category->getId()
 ),
 $e
 );
 
 return true;
 

In my case I put the erorr message within the returned string

vendor/magento/module-catalog/Model/CategoryLinkRepository.php

public function save(MagentoCatalogApiDataCategoryProductLinkInterface $productLink)

 $category = $this->categoryRepository->get($productLink->getCategoryId());
 $product = $this->productRepository->get($productLink->getSku());
 $productPositions = $category->getProductsPosition();
 $productPositions[$product->getId()] = $productLink->getPosition();
 $category->setPostedProducts($productPositions);
 try 
 $category->save();
 catch (Exception $e) 
 throw new CouldNotSaveException(
 __(
 'Could not save product "%1" with position %2 to category %3 : error %4',
 $product->getId(),
 $productLink->getPosition(),
 $category->getId(),
 $e->getMessage()
 ),
 $e
 );
 
 return true;

The error was about unique integrity in the database.

And sure enough there were duplicate category IDs in an array I was providing for linking products to categories

public function __construct(
 MagentoCatalogApiCategoryLinkManagementInterface $categoryLinkManagementInterface
) 
 $this->categoryLinkManagementInterface = $categoryLinkManagementInterface;


/**
 * Assign product to category
 * @param MagentoCatalogModelProduct $product
 * @param array $categoryIds
 * @return void
 */
public function assignProductToCategory($product, $categoryIds = [])

 if(!empty($categoryIds)) 
 $this->categoryLinkManagementInterface->assignProductToCategories(
 $product->getSku(),
 $categoryIds
 );