In this article we will be seeing how to assign the subscriptions to the partitioned user profile service application proxy in SharePoint 2010.I have a partitioned User Profile service application and proxy. And I have one web application in which I have 2 subscriptions. In this I am going to assign the subscriptions to the partitioned user profile service application proxy.Get the User Profile Service Application Proxy$getUserProfileServiceApplicationProxy= Get-SPServiceApplicationProxy | ? {$_.DisplayName.Contains("Partitioned User Profile Service Application Proxy ")} Get the SPSiteSubscriptionGet-SPSiteSubscription => You will be getting all the subscriptions as shown in the following.I am going to assign a single subscription to the user profile service application proxy so I am going to get that subscription id.$subscription=Get-SPSiteSubscription -Identity "5ccd890c-6fad-411e-bbd0-e3699a612057"To Check:$subscriptionAdding the subscription to the user profile service application proxyAdd-SPSiteSubscriptionProfileConfig -Identity $subscription -ProfileServiceApplicationProxy $getUserProfileServiceApplicationProxySame way I have added another subscription to the user profile service application proxy.Go to Central Administration => Application Management => Manage service applications => Partitioned User Profile Service Application.Click on the "Partitioned User Profile Service Application" to see the Manage User Profiles page, you could see Number of tenants equal to 2.