Magento 2: How to resolve Item with the same ID “ID” already exists error?

When you get error like: Item (Magento\Catalog\Model\Product\Interceptor) with the same ID “<id>” already exists.

Then you can use below module to resolve above error.

1. Create new folders Magemonkey/DuplicateEntry in app/code magento folder.
2. add new file registration.php in DuplicateEntry folder and put below code.

<?php

\Magento\Framework\Component\ComponentRegistrar::register(
 \Magento\Framework\Component\ComponentRegistrar::MODULE,
 'Magemonkey_DuplicateEntry',
 __DIR__
);

<?php

\Magento\Framework\Component\ComponentRegistrar::register(

\Magento\Framework\Component\ComponentRegistrar::MODULE,

'Magemonkey_DuplicateEntry',

__DIR__

);

3. add new file etc/module.xml in DuplicateEntry folder and put below code.

<?xml version="1.0"?>

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
 <module name="Magemonkey_DuplicateEntry" setup_version="1.0.1"></module>
</config>

<?xml version="1.0"?>

</config>

4. add new file etc/di.xml in DuplicateEntry folder and put below code.

<?xml version="1.0"?>

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
 <type name="Magento\Eav\Model\Entity\Collection\AbstractCollection">
    <plugin name="find_duplicate_entry" type="Magemonkey\DuplicateEntry\plugin\Collection" sortOrder="20"/>
 </type>
</config>

<?xml version="1.0"?>

</type>

</config>

5. add new file plugin/Collection.php in DuplicateEntry folder and put below code.

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 */
namespace Magemonkey\DuplicateEntry\plugin;
use Magento\Framework\Data\Collection\EntityFactoryInterface;
use Magento\Framework\Option\ArrayInterface;

class Collection
{
    /**
     * @param \Magento\Eav\Model\Entity\Collection\AbstractCollection $subject
     * @param \Closure $process
     * @param \Magento\Framework\DataObject $dataObject
     * @return $this
     */
    public function aroundAddItem(\Magento\Eav\Model\Entity\Collection\AbstractCollection $subject, \Closure $process, \Magento\Framework\DataObject $dataObject)
    {
        try{
            return $process($dataObject);
        }catch ( \Exception $e){
            return $this;
        }
    }
}

<?php

/**

namespace Magemonkey\DuplicateEntry\plugin;

use Magento\Framework\Data\Collection\EntityFactoryInterface;

use Magento\Framework\Option\ArrayInterface;

class Collection

{

/**

* @param \Magento\Eav\Model\Entity\Collection\AbstractCollection $subject

* @param \Closure $process

* @param \Magento\Framework\DataObject $dataObject

* @return $this

public function aroundAddItem(\Magento\Eav\Model\Entity\Collection\AbstractCollection $subject, \Closure $process, \Magento\Framework\DataObject $dataObject)

{

try{

return $process($dataObject);

}catch ( \Exception $e){

return $this;

}

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