vSphere 6.0 permits assignment of a tenant name other than vsphere.local. However, alternate names cannot be used for the vRealize Automation default tenant name.

If you specify a tenant name other than vsphere.local with vSphere 6.0 Platform Service Control (PSC), you cannot configure the default tenant for vRealize Automation.

vRealize Automation requires that the default tenant name be vsphere.local. Input is for other tenant names is disabled on the SSO tab of the management console.

Rename the tenant to vsphere.local.