Virtual machine is present in a resource pool (resgroup-xxxxx) not managed by vCD.
Cloud Director 10.6
The issue occurs due to a change meant to improve auto-import-debug reporting. The change is supposed to find VMs out of VCD resource pools but the SQL query mistakenly finds VMs in vCD resource pools instead.
The message is benign and can be ignored. The issue will be fixed in next major release of Cloud Director.