########-####-####-####-############ ] Cannot delete NSX-T Manager <NSX-T manager> since it is used by Provider VDCs <Provider VDC>. Please delete the referenced Provider VDCs.VMware Cloud Director 10.6.1.2
Provider VDCs would still refer the NSX-T Manager in database even after deleting all the NSX-T resources.
A database modification would be required to fix this Issue. Please open a support request with Broadcom Support referencing this KB article (406464).
For more information, see Creating and managing Broadcom support cases.