Placing Resource Upgrade order leads to an error:
It is prohibited to Upgrade/Downgrade Resources which are not installed; such as res.name (#1000108). Error Code: 0xb6b45990. Report ID: xxx
Resource in subscription has status "Purchased". Can be caused by the fact that subscriptions was created by API and resource was not physically provisioned.
Synchronize this resource with Service Plan at first. It will get status "Optional" or "Installed".