VMware Cloud Director 10.6.1.1
This is a known issue affecting VMware Cloud Director version 10.6.1.
This will be fixed in VMware Cloud Director version 10.6.1.2 version.
Workaround:
Option 1:
1) Log in to the VMware Cloud Director Provider portal.
2) Navigate to Organization VDCs under Resources.
3) Select the VDC where the VM is failing to power on.
4) In the left panel, click Allocation and then select Edit.
5) Without changing any value/parameter.
6) Save it.
7) Check if the number of resource pools in an OVDC is same to the backed PVDC.
8) Try powering on the VM again.
Option 2:
Retry power on the same virtual machine.