delete group approval workflow

We are trying to set up a workflow that will require our service desk to get approval to delete AD groups.  I thought this would be fairly simple to accomplish so not sure what I am missing here.

I've got the work flow set up to trigger when any service desk tech tries to delete a group, the approval prompt pops up, they put in the reason and the request gets sent to their lead.  The issue is when the lead clicks any option, it takes them to a pending request page but the request is not there.  

Looking at logs, I see this:

ActiveRoles.Workflow.ArsTerminateWorkflowException: Approval rule activity has terminated this workflow instance.
at ActiveRoles.Service.Workflow.Activities.ApprovalServiceActivity.wQueue_QueueItemAvailable(Object sender, QueueEventArgs e)

which lead me to this URL:  https://support.oneidentity.com/kb/4339214/event-log-error-approval-rule-activity-has-terminated-this-workflow-instance-

Does this mean I cannot use an approval rule option to delete AD groups in a workflow?

Is there another (better) way to accomplish this?   Thanks