Access to Completion reason

Ho yosefc 

Have you tried the Get-QARSApprovalTask cmdlet?

Yes, I've used the Get-QARSApprovalTask cmdlet.
However, I need to retrieve the completion reason of a specific approval task within the workflow.
Once a user approves, my PowerShell script creates a case in SysAid.
I aim to include the completion reason in the case description