Can't create credit memo - free shipping related (Division by zero exception)

[brian-ebizmarts]

Preconditions and environment

• Magento version Commerce 2.4.6-beta2

Steps to reproduce

1. Enable free shipping from Stores > Configuration > Sales > Delivery Methods.
2. Use the following Tax calculation settings:
   
3. Use the following display settings (required):
   
4. Flush cache
5. Login on the frontend and place an order with Free shipping.
6. Create the invoice
7. Attempt to create the credit memo.

Expected result

Credit memo created

Actual result

The CollectTotals throws the exception "Division by zero".
vendor/magento/module-sales/Model/Order/Creditmemo/Total/Tax.php
Line 139

Additional information

No response

Release note

No response

Triage and priority

• 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 @brian-ebizmarts. Thank you for your report.
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[m2-assistant]

Hi @engcom-Bravo. Thank you for working on this issue.
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[m2-assistant]

Hi @engcom-Alfa. Thank you for working on this issue.
In order to make sure that issue has enough information and ready for development, please read and check the following instruction: 👇

• 1. Verify that issue has all the required information. (Preconditions, Steps to reproduce, Expected result, Actual result).

• 2. Verify that issue has a meaningful description and provides enough information to reproduce the issue.

• 3. Add Area: XXXXX label to the ticket, indicating the functional areas it may be related to.

• 4. Verify that the issue is reproducible on 2.4-develop branch

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[engcom-Bravo]

@magento give me 2.4-develop instance

[magento-deployment-service]

Hi @engcom-Bravo. Thank you for your request. I'm working on Magento instance for you.

[magento-deployment-service]

Hi @engcom-Bravo, here is your Magento Instance: https://2113edccd9db43b11dba20a679435568.instances.magento-community.engineering
Admin access: https://2113edccd9db43b11dba20a679435568.instances.magento-community.engineering/admin_7cbe
Login: ece0decd
Password: 5d2f1d9d2244

[engcom-Bravo]

Hi @brian-ebizmarts,

Thank you for reporting and collaboration.

Verified the issue on Magento 2.4-develop instance and the issue is reproducible.Kindly refer the attached vidoe.

Steps to reproduce

1.Enable free shipping from Stores > Configuration > Sales > Delivery Methods.

2.Tax calculation settings:

3.Use the following display settings (required):

4.Flush cache
5.Login on the frontend and place an order with Free shipping.
6.Create the invoice
7.Attempt to create the credit memo.

Screen.Recording.2023-02-06.at.3.41.32.PM.mov

Error Logs for reference:

We are not able to create the credit memo using free shipping for ordering a product.

It is working fine with other shipping methods.We are able to create Credit Memo.

Hence confirming the issue.

Thanks.