Deleting tenants from vRA 8.1 is not supported. Once a tenant was associated with vRA 8.1 it can no longer be removed.
Thanks for your reply. That's what I was afraid of.
That might cause a mess within vRA environment.
Thanks for your answer. This is really bad.
By mistake, I removed the organization owner, and not added a new one before that, so I don't have any user with permissions on the tenant. What can I do? Thanks.