After a validation error of a configurable product the variant table is not functional anymore

[MarianNapi]

Preconditions (*)

1. Magento version 2.4.2
2. PHP 7.4

Steps to reproduce (*)

1. Create new configurable product
2. add several child products
3. force the validator to fail
4. try to remove one child product

Expected result (*)

1. the chosen child should be removed from the variation list

Actual result (*)

1. every child get's removed

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Please provide Severity assessment for the Issue as Reporter. This information will help during Confirmation and Issue triage processes.

• Severity: S0 - Affects critical data or functionality and leaves users without workaround.
• Severity: S1 - Affects critical data or functionality and forces users to employ a workaround.
• Severity: S2 - Affects non-critical data or functionality and forces users to employ a workaround.
• Severity: S3 - Affects non-critical data or functionality and does not force users to employ a workaround.
• Severity: S4 - Affects aesthetics, professional look and feel, “quality” or “usability”.

[m2-assistant]

Hi @MarianNapi. Thank you for your report.
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[MarianNapi]

@magento give me 2.4-develop instance

[magento-deployment-service]

Hi @MarianNapi. Thank you for your request. I'm working on Magento instance for you.

[magento-deployment-service]

Hi @MarianNapi, here is your Magento Instance: https://c1dcb136eb7748b9eaac95c6ce30ab6f-2-4-develop.instances.magento-community.engineering
Admin access: https://c1dcb136eb7748b9eaac95c6ce30ab6f-2-4-develop.instances.magento-community.engineering/admin_59a2
Login: 3e3e9a54
Password: 64a879293ffc

[MarianNapi]

I tried to force the built in validator to return an error but failed on that. You can simply use a custom validatePlugin to throw an error and the table wont work anymore.

[t-heuser]

I can confirm that this issue exists on my local machine by just manipulating the Validate class and force it to fail. The result is that the entire configurable matrix is destroyed ui wise and continue working is impossible, you have to reload the page and you'll loose every change you made.

[m2-assistant]

Hi @engcom-Delta. Thank you for working on this issue.
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[engcom-Delta]

Hi MarianNapi,
Kindly elaborate step# 3 (force the validator to fail) , how to force the validator ?.

Thanks

[t-heuser]

Hi @engcom-Delta you can force the validator to fail by just editing the Validate class and adding "throw new LocalicedException(__('Error'))" to the line i've linked (line 118). This will force the validation to fail and you'll be able to the the issue described.

We've found no way to trigger a validation error via UI.

[engcom-Delta]

Hi MarianNapi,

Tried to reproduce it by following the steps provided but issue is not reproducible , it works as expected.
Kindly find attached snapshots for reference.

Steps followed (on Magento 2.4 Develop).

1. Log into backend
2. create configurable product
3. go to file (validate.php ) path magento2/app/code/Magento/Catalog/Controller/Adminhtml/Product/Validate.php and open file in notepad
4. Add "throw new LocalicedException(__('Error'))" to the line i've linked (line 118)( in Validate.php file)
5. Save it
6. Go to configurable product & remove 1 child product
7. Observed that other child products remain present , not getting all the child product.
   Hence labelled this issue as 'Needs update'.

Thanks

[MarianNapi]

Hey engcom-Delta,

after your step 5 you need to click save in the configurable product. (For example after adding a child or renaming the product) The save process then get's interrupted because of the failed validation and you are still in the edit page of your product. After this failed validation trying to remove one child removes all children.