Use Connect-PnPOnline in a workflow - powershell

Question

Good morning, everyone,
I have a problem in retrieving information from SharePoint groups. I do it in a workflow, first I get the list of all groups and then I use it in a foreach-parallel to list the members of these groups.
The problem is that the connection doesn't seem to be maintaining and my query doesn't recover all the groups.
Here is a piece of the code:
workflow GetGroup {
param(
[Parameter(Mandatory)]
[String]$SPOSite,
[System.Management.Automation.PSCredential]$SPOCreds
)
$KeepAlive = Connect-PnPOnline -Url $SPOSite -Credentials $SPOCreds -ReturnConnection
$GetGroups = Get-PnPGroup
ForEach -Parallel -ThrottleLimit 512 ($Group in $GetGroups)
{
$GroupName = $Group.LoginName
$Users = Get-PnPGroupMembers -Identity $groupName -Connection $workFlow:KeepAlive
}
}
GetGroup -SPOSite "https://xxx.sharepoint.com/sites/xx -SPOCreds (Get-Credential)
The expected result would be an array initialized at the beginning of the workflow with a PSCustomObject object that is added to our array. This table is made up of 3 things: The name of the group, the names of the people in that group, the emails of the people.
Unfortunately the table is only partially generated because a workflow here is the error I find nothing on the subject:
Impossible to link the "Connection" parameter. Impossible to convert the value "SharePointPnP.PowerShell.Commands.Base.SPOnlineConnection" of the type "SharePointPnP.PowerShell.Commands.
Deserialized.SharePointPnPnP.PowerShell.Commands.Base.SPOnlineConnection"
Thank you for your help.

Answer 1

I ran into the same error in a similar scenario, and this article helped me. Workflow is converting the Connection object ($KeepAlive in your case) to a deserialized format, and so the other cmdlet doesn't accept it. You will just have to wrap those cmdlets with InlineScript, or use a PowerShell script runbook instead of a PowerShell workflow runbook.