Can't Refund Invoice Without 0 Quantities Through REST API

[EyalAmir]

1. The API responds with error "You can't create a creditmemo without products." from the QuantityValidator.

[m2-assistant]

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@EyalAmir do you confirm that you were able to reproduce the issue on vanilla Magento instance following steps to reproduce?

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[EyalAmir]

yes

[m2-assistant]

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[m2-assistant]

Hi @engcom-Charlie. Thank you for working on this issue.
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[magento-engcom-team]

✅ Confirmed by @engcom-Charlie
Thank you for verifying the issue. Based on the provided information internal tickets MC-18785 were created

Issue Available: @engcom-Charlie, You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself.

[raduluputu]

Hello,
I am encountering the same exact issue. Any updates on when to expect the solution for it?
Thanks! @magento-engcom-team

[agrohs]

Any update on here???

[m2-assistant]

Hi @engcom-Echo. Thank you for working on this issue.
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[ihor-sviziev]

Adding back Severity label

[engcom-Oscar]

Hi @EyalAmir !
I couldn't reproduce this issue on latest 2.4-develop code, could you please recheck it?

[engcom-Oscar]

Hi @EyalAmir . I was able to reproduce the issue only with "0" shipping cost, not without, so I amend description.

[EyalAmir]

0 shipping cost is the scenario I had in the "Steps to reproduce" so that makes sense. The test refund I had tried was:
{"items": [{"qty": 0, "orderItemId": 6, "extensionAttributes": {}}], "appendComment": false, "notify": true, "isOnline": true, "arguments": {"adjustment_negative": 0.0, "adjustment_positive": 0.99, "shipping_amount": 0}}