Hello,
I asked this question in the Microsoft Q&A forum, but they requested I post it here instead.
I'm trying to delete a virtual network resource.
One subnet was previously used for PowerBI SAL and I've been unable to delete it. This is a very common issue, so the troubleshooter has an automated process which re-syncs the resources with Azure Resource Manager to resolve the issue. Here is a screenshot from the troubleshooter - it has identified the problem correctly: 
I have attempted this fix three separate times, but I still cannot delete the subnet - the troubleshooter is unable to resolve the issue.
I would like to request manual intervention to resolve the issue.
Thank you.