Web Api to create customer don't validate payload data and create corrupted record

[GDauer]

Preconditions (*)

1. Magento 2.3.3
2. PHP 7.2.22
3. nginx/1.10.3

Steps to reproduce (*)

1. Send a post request to the endpoint /rest/V1/customers
2. In the payload send an invalid group_id (by default Magento has the ids: 0, 1, 2, 3)
3. (optional) Another strange thing is that we can send the request to create a customer without password and the api creates the register.
4. Example of Request:
   

Expected result (*)

1. Should throws an Exception informing that the group_id are not found

Actual result (*)

1. It's creates the client record successfully
2. The client can't see products or add products to the quote
3. https://www.loom.com/share/bf9c71c78bd6427b9537285c6064eb80

[m2-assistant]

Hi @GDauer. Thank you for your report.
To help us process this issue please make sure that you provided the following information:

• Summary of the issue
• Information on your environment
• Steps to reproduce
• Expected and actual results

Please make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce. To deploy vanilla Magento instance on our environment, please, add a comment to the issue:

@magento give me 2.4-develop instance - upcoming 2.4.x release

For more details, please, review the Magento Contributor Assistant documentation.

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

• yes
• no

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[m2-assistant]

Hi @shikhamis11. Thank you for working on this issue.
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[magento-engcom-team]

✅ Confirmed by @shikhamis11
Thank you for verifying the issue. Based on the provided information internal tickets MC-33923 were created

Issue Available: @shikhamis11, You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself.