Are you getting errors trying to retrieve a Microsoft 365 group using PnP PowerShell? The identity you are using might contain characters that will break the filter string being passed to Microsoft Graph (in this example, the ampersand (&)):

❯ Get-PnPMicrosoft365Group -Identity "People & Places"
Get-PnPMicrosoft365Group : Invalid filter clause
At line:1 char:1
+ Get-PnPMicrosoft365Group -Identity "People & Places"
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [Get-PnPMicrosoft365Group], PSInvalidOperationException
    + FullyQualifiedErrorId : InvalidOperation,PnP.PowerShell.Commands.Microsoft365Groups.GetMicrosoft365Group

Solution The name needs to be encoded - this can be done using System.Web.HttpUtility:

$name = "People & Places"
$group = Get-PnPMicrosoft365Group -Identity ([System.Web.HttpUtility]::UrlEncode($name))

This will turn “People & Places” into “People+%26+Places”.

The problem can be clearly seen if we translate it to a direct Graph API call:$filter=displayName eq 'People & Places'