Add-MgGroupToLifecyclePolicy throws an error, but adds group to the Expiration policy

[Adminiuga]

Running Add-MgGroupToLifecyclePolicy throws Add-MgGroupToLifecyclePolicy : Object reference not set to an instance of an object. but still adds group to the lifecycle policy. Seems to have issues parsing the response correctly.

Here's the debug log, as you can see, the request has completed successfuly, but cmdlet threw an exception

PS C:\Users\some_user> Add-MgGroupToLifecyclePolicy -GroupLifecyclePolicyId ca1ad70c-1368-42d3-a5e8-d6cbb67a4bfc -GroupId 1a28df02-8e99-4cd6-94df-eed334be76a5 -Debug
DEBUG: [CmdletBeginProcessing]: - Add-MgGroupToLifecyclePolicy begin processing with parameterSet 'AddExpanded'.

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', AuthProviderType: 'InteractiveAuthenticationProvider', ContextScope:
'CurrentUser', AppName: 'Microsoft Graph PowerShell'.
DEBUG: [Authentication]: - Scopes: [Group.ReadWrite.All, openid, profile, Team.Create, TeamMember.ReadWrite.All,
TeamSettings.ReadWrite.All, User.ReadBasic.All, email, Directory.ReadWrite.All].

Confirm
Are you sure you want to perform this action?
Performing the operation "Add-MgGroupToLifecyclePolicy_AddExpanded" on target "Call remote
'GroupLifecyclePoliciesAddGroup' 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:
POST

Absolute Uri:
https://graph.microsoft.com/v1.0/groupLifecyclePolicies/ca1ad70c-1368-42d3-a5e8-d6cbb67a4bfc/microsoft.graph.addGroup

Headers:


Body:
{
  "groupId": "1a28df02-8e99-4cd6-94df-eed334be76a5"
}

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

Status Code:
OK

Headers:
Transfer-Encoding             : chunked
Vary                          : Accept-Encoding
Strict-Transport-Security     : max-age=31536000
request-id                    : d5ead9d8-a5dd-4720-a7eb-9a8c5f5864df
client-request-id             : d5ead9d8-a5dd-4720-a7eb-9a8c5f5864df
x-ms-ags-diagnostic           : {"ServerInfo":{"DataCenter":"North Central
US","Slice":"E","Ring":"3","ScaleUnit":"004","RoleInstance":"CH01EPF00003EB5"}}
OData-Version                 : 4.0
Cache-Control                 : no-cache
Date                          : Fri, 03 Jun 2022 16:31:40 GMT
Location                      : https://graph.microsoft.com/

Body:
{
  "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#Edm.Boolean",
  "value": true
}

DEBUG: [CmdletException]: Received exception with message 'NullReferenceException - Object reference not set to an
instance of an object. :    at
Microsoft.Graph.PowerShell.Cmdlets.AddMgGroupToLifecyclePolicy_AddExpanded.<onOk>d__64.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Graph.PowerShell.Groups.<GroupLifecyclePoliciesAddGroup_Call>d__9.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.Graph.PowerShell.Groups.<GroupLifecyclePoliciesAddGroup_Call>d__9.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Graph.PowerShell.Groups.<GroupLifecyclePoliciesAddGroup>d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Graph.PowerShell.Cmdlets.AddMgGroupToLifecyclePolicy_AddExpanded.<ProcessRecordAsync>d__61.MoveNext()'

Confirm
Object reference not set to an instance of an object.
[Y] Yes  [A] Yes to All  [H] Halt Command  [S] Suspend  [?] Help (default is "Y"): A
Add-MgGroupToLifecyclePolicy : Object reference not set to an instance of an object.
At line:1 char:1
+ Add-MgGroupToLifecyclePolicy -GroupLifecyclePolicyId ca1ad70c-1368-42 ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Add-MgGroupToLifecyclePolicy_AddExpanded], NullReferenceException
    + FullyQualifiedErrorId : Microsoft.Graph.PowerShell.Cmdlets.AddMgGroupToLifecyclePolicy_AddExpanded

DEBUG: [CmdletEndProcessing]: - Add-MgGroupToLifecyclePolicy end processing.

[Adminiuga]

this is with 1.9.6 version and 5.1 PowerShell

ModuleType Version    Name                                ExportedCommands
---------- -------    ----                                ----------------
Script     1.9.6      Microsoft.Graph.Authentication      {Add-MgEnvironment, Connect-MgGraph, Disconnect-MgGraph, G...
Script     1.9.6      Microsoft.Graph.Groups              {Add-MgGroupFavorite, Add-MgGroupToLifecyclePolicy, Confir...
Script     1.9.6      Microsoft.Graph.Teams               {Add-MgChatMember, Add-MgTeamChannelMember, Add-MgTeamMemb...
Script     1.9.6      Microsoft.Graph.Users               {Get-MgUser, Get-MgUserCreatedObject, Get-MgUserCreatedObj...
Manifest   3.1.0.0    Microsoft.PowerShell.Management     {Add-Computer, Add-Content, Checkpoint-Computer, Clear-Con...
Manifest   3.1.0.0    Microsoft.PowerShell.Utility        {Add-Member, Add-Type, Clear-Variable, Compare-Object...}
Script     2.0.0      PSReadline                          {Get-PSReadLineKeyHandler, Get-PSReadLineOption, Remove-PS...

PowerShell

Name             : ConsoleHost
Version          : 5.1.19041.1682
InstanceId       : ea76cfb2-9a7e-497e-a12b-c258d5ae7b7f
UI               : System.Management.Automation.Internal.Host.InternalHostUserInterface
CurrentCulture   : en-US
CurrentUICulture : en-US
PrivateData      : Microsoft.PowerShell.ConsoleHost+ConsoleColorProxy
DebuggerEnabled  : True
IsRunspacePushed : False
Runspace         : System.Management.Automation.Runspaces.LocalRunspace

[peombwa]

Thanks for bringing this to our attention. The issue has already been fixed and will be available as part of the next release #1265.

Closing as duplicate of #1241