# 400 Bad Request When Creating a User

This article examines an error that might occur when you create a user account using YouTrack REST API. You can face this error when the request is sent to an endpoint that doesn't support user creation in your YouTrack version.

## Error Message

```JSON
{
    "error": "invalid_properties",
    "error_description": "<no user> is not a valid user login.",
    "error_children": [
        {
            "error": "User-is-invalid",
            "error_description": "<no user> is not a valid user login.",
            "error_developer_message": "<no user> is not a valid user login."
        }
    ]
}
```

## Request Details

Here are the details about a sample request that might result in this error.

| Attribute | Value |
| --- | --- |
| Request method | POST |
| Endpoint | `/api/users` |
| Request body |     ```JSON {     "login": "johny.doe",     "email": "johny@doe.com",     "fullName": "Johny Doe",     "$type": "User" } ```    |
| HTTP response code | 400 |

## Troubleshooting

Here are some possible causes and suggestions on how to overcome the error and create the user account.

### Cause

The request uses a user-management endpoint that isn't supported for creating users in your YouTrack version.

### Solution

Check which API supports user management in your YouTrack version, then send the request to the corresponding endpoint.

Starting with YouTrack 2026.1, use YouTrack REST API for user-management operations. In earlier versions, create and manage user accounts with Hub REST API.

For details about choosing the correct API for user, group, role, and permission operations, see [Users, Groups, and Access Management](api-users-yt-vs-hub.html).