In Central Administration : Required Features

I was trying to get Document Sets going in my Enterprise Sharepoint 2010 and came across the following message.

The feature being activated is a Site Collection scoped feature which has a dependency on a Web Application scoped feature which has not been activated. Please activate the following feature before trying again: Document Sets metadata synchronization 3a4ce811-6fe0-4e97-a6ae-675470282cf2

It appears that Document Sets metadata synchronization needs enabling first and it is a manual (Power Shell) operation.

After searching the SP2010 features and links, I chose to run the following in Power Shell:- 

enable-spfeature -identity "3a4ce811-6fe0-4e97-a6ae-675470282cf2"
 -URL http://mySharepointURL