Issue
When you configure and save a BOVPN between two cloud-managed Fireboxes within the same WatchGuard Cloud account, WatchGuard Cloud returns an error if you use pre-defined network resources. WatchGuard Cloud returns this error: Configured network does not belong to 'XXXXXXX'
Workaround/Solution
On the BOVPN Traffic page, for Endpoint A, select a network from the pre-defined list of networks. For Endpoint B, do not select a network from the pre-defined list of networks. Instead, click Add Network Resource and manually recreate the pre-defined network that you want to use.
For more information about the BOVPN Traffic page, go to Configure a BOVPN Between Cloud-Managed Fireboxes in Help Center.