Another short one. After the initial installation and decision to skip the configuration workflow, I now configure the first, vCenter (vSphere), Endpoint.
The reason I am doing this first is simple, I don’t like errors 🙂
During the installation you gave a vSphere agent a name – likely ‘vCenter’.
vRA is now looking for an Endpoint called ‘vCenter’
So I’ll do that first. Plus once you got the endpoint configured, the data collection can start gathering all the bits needed to create a Fabric Group.
Now, first obviously browse to your vRA environment
Remember, during the initial configuration a user has been created – configurationadmin. Login using that user
Navigate to Infrastructure and then click Endpoints
Click Credentials and then click 
Enter here your user with administrative permissions in vCenter – I simply use the default SSO admin – click 
In the same view, click Endpoints and create a vSphere (vCenter) Endpoint
Enter here the details of your vCenter – Ensure to use the identical name used during the initial agent install.
As a reminder – this is where you initially configured the Endpoint name – vCenter
Now enter the same details, specifying the newly created credentials.
That’s your first Endpoint done. By default vRA will run a Data Collection every 4hrs. Until the first Data Collection is run you won’t see your resources, and therefore you won’t be able to create a Fabric Group.
So do it first to stop errors in the log and to get a head start with the collection 😉