Update-MgDeviceManagementManagedDevice fails to update device category of Intune managed devices

Thanks for reporting the bug. Please ensure you've gone through the following checklist before opening an issue:

• Make sure you can reproduce this issue using the latest released version of Microsoft.Graph or Microsoft.Graph.Beta.
• Please search the existing issues to see if there has been a similar issue filed.
• For issues related to authentication and service errors, please refer to our troubleshooting guide. For service issues, please open a question at https://developer.microsoft.com/graph/support.

Describe the bug

A clear and concise description of what the bug is.

Aim: Update device category of Intune managed devices via the Microsoft.Graph.DeviceManagement library using PowerShell.

I found the following cmdlet: Get-MgDeviceManagementManagedDevice with deviceCategory parameter which should (in theory) update the device category.

PowerShell script used.

Connect-MgGraph

function Update-DeviceCategory {
  param (
    [Parameter (Mandatory)]
    [string]$DeviceID,
    [Parameter (Mandatory)]
    [string]$DeviceCategory
  )
  Write-Host "Updating device category: $DeviceCategory, for device: $DeviceID"
  $body = @{
    '@odata.id' = "https://graph.microsoft.com/beta/deviceManagement/deviceCategories/$DeviceCategory"
  }
  Update-MgDeviceManagementManagedDevice -managedDeviceId $DeviceID -BodyParameter $body -debug
}

$intuneDevice = Get-MgDeviceManagementManagedDevice -managedDeviceId "fd7c3a2b-4c26-448d-9498-4770a84a176b"
$deviceCategory = '5b1d64fa-506c-48c8-b933-99533ffcd352'

Update-DeviceCategory -DeviceID $intuneDevice.id -DeviceCategory $deviceCategory

Output: The script runs without errors and it seems like it completed successfully as seen below.

However, the device category never updates as confirmed via Graph explorer.

Furthermore, from the verbose logs, we can see that the body of the response being sent is blank.

To Reproduce
Steps to reproduce the behavior:

1. Create a device category in Intune
2. Run the above script with the device category ID obtained from point 1.

Expected behavior

A clear and concise description of what you expected to happen.

The device category for the device should update to the mentioned ID.

Debug Output

Run the problematic command with -Debug and paste the resulting debug stream below.
⚠ ATTENTION: Be sure to remove any sensitive information that may be in the logs.

Updating device category: 5b1d64fa-506c-48c8-b933-99533ffcd352, for device: fd7c3a2b-4c26-448d-9498-4770a84a176b
DEBUG: [CmdletBeginProcessing]: - Update-MgDeviceManagementManagedDevice begin processing with parameterSet 'Update'.

Confirm
Continue with this operation?
[Y] Yes  [A] Yes to All  [H] Halt Command  [S] Suspend  [?] Help (default is "Y"): a
DEBUG: [Authentication]: - AuthType: 'Delegated', TokenCredentialType: 'InteractiveBrowser', ContextScope:
'CurrentUser', AppName: 'Microsoft Graph Command Line Tools'.
DEBUG: [Authentication]: - Scopes: [Device.ReadWrite.All, DeviceManagementManagedDevices.Read.All,
DeviceManagementManagedDevices.ReadWrite.All, DeviceManagementServiceConfig.ReadWrite.All, Group.ReadWrite.All, openid,
 profile, User.Read, email].

Confirm
Are you sure you want to perform this action?
Performing the operation "Update-MgDeviceManagementManagedDevice_Update" on target "Call remote 'PATCH
/deviceManagement/managedDevices/{managedDevice-id}' operation".
[Y] Yes  [A] Yes to All  [N] No  [L] No to All  [S] Suspend  [?] Help (default is "Y"): a
DEBUG: ============================ HTTP REQUEST ============================

HTTP Method:
PATCH

Absolute Uri:
https://graph.microsoft.com/v1.0/deviceManagement/managedDevices/fd7c3a2b-4c26-448d-9498-4770a84a176b

Headers:
FeatureFlag                   : 00000043
Cache-Control                 : no-store, no-cache
User-Agent                    : Mozilla/5.0,(Windows NT 10.0; Microsoft Windows 10.0.22631;
en-US),PowerShell/5.1.22621.2506
Accept-Encoding               : gzip
SdkVersion                    : graph-powershell/2.9.0
client-request-id             : 495e8d3d-d049-4f6e-a419-0011b57640ed

Body:
{
  "@odata.id":
"https://graph.microsoft.com/beta/deviceManagement/deviceCategories/5b1d64fa-506c-48c8-b933-99533ffcd352"
}

DEBUG: ============================ HTTP RESPONSE ============================

Status Code:
NoContent

Headers:
Strict-Transport-Security     : max-age=31536000
request-id                    : <Redacted>
client-request-id             : <Redacted>
x-ms-ags-diagnostic           : {"ServerInfo":{"DataCenter":"South
India","Slice":"E","Ring":"2","ScaleUnit":"002","RoleInstance":"MA1PEPF00003153"}}
Date                          : Mon, 20 Nov 2023 14:21:28 GMT

Body:

DEBUG: [CmdletEndProcessing]: - Update-MgDeviceManagementManagedDevice end processing.

Module Version

Please run Get-Module Microsoft.Graph* after cmdlet execution and paste the output below.
If a module cannot be installed or imported, please run Get-Module -ListAvailable and paste the output.

Script 2.9.0 Microsoft.Graph.Authentication
Script 2.9.0 Microsoft.Graph.DeviceManagement

Environment Data

Please run $PSVersionTable and paste the output below. If running the Docker container image, indicate the tag of the image used and the version of Docker engine.

PSVersion 5.1.22621.2506
PSEdition Desktop
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
BuildVersion 10.0.22621.2506
CLRVersion 4.0.30319.42000
WSManStackVersion 3.0
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1

Screenshots

If applicable, add screenshots to help explain your problem.

Added above where applicable.

Additional context

Add any other context about the problem here.

Related to another issue I posted.

Inizia con il cmdlet Update-MgDeviceManagementManagedDevice e riproduci la richiesta PATCH mostrata nell'output di debug utilizzando gli ID del dispositivo e della categoria forniti. Confronta la richiesta con l'issue correlata e il comportamento di Microsoft Graph; il lavoro è completo quando la categoria del dispositivo è stata modificata correttamente e il risultato è verificabile tramite Graph Explorer.