Delete a tenant from SSO from a previous version of vCAC

I've reinstalled the vCAC appliance in my platform and when I've tried to create a tenant, it throws an error "Tenant already exists".

¿Is there a way to remove the tenant from the previous installation?

I'm using vCAC 6.1 and the last version of vCenter SSO installed on a Windows 2008 R2.

Thanks a lot,

D.