I have tested this item ? unsuccessfully on 4eb45ab

Modified the example in the Postman collection and sent the following JSON as Patch: {'email': 'new@example.org','groups': ['2'],'name': 'name','username': 'username'}

Received the error:

{
    "errors": [
        {
            "title": "Save failed with the following error: You can't save a user account without selecting at least one user group.",
            "code": 400
        }
    ]
}
```<hr /><sub>This comment was created with the <a href="https://github.com/joomla/jissues">J!Tracker Application</a> at <a href="https://issues.joomla.org/tracker/joomla-cms/37994">issues.joomla.org/tracker/joomla-cms/37994</a>.</sub>

@toivo which version ? 4.2 or 4.1

@alikon I was testing in 4.1

@toivo i got that message when i don't pass groups which is mandatory
{"email": "new@example.org","name": "name","username": "username"}

I have tested this item ✅ successfully on 14830e8

Works with this new code.
Asked if we can also not have to set the groups attribute, as we may not me updating user/group memeberships via API calls.
But this fix is working when I also PATCH the Group:

e.g.
{"email":"hello@nowhere.com","groups":["2"], "other_custom_field": "0"}

PASS
Successful 2xx request

I have tested this item ✅ successfully on 14830e8

Tested successfully in Joomla 4.1.5-dev using Postman and PHP 8.0.15.

RTC

Thx