SCOM 2012 Service Level Dashboard SLD Empty

Faced an issue when we created the Service Level Dashboard in SCOM 2012
As SLD can be created in the SCOM console in 2012 version of it , i went ahead and created a Distributed Application , then associated Service level monitoring with it.

Finally i went ahead and created the SLD from SCOM Console.

However once the dashboard was created it did not show any data.
The Image is shown here:

As i was checking online i found a thread on technet forum:
http://social.technet.microsoft.com/Forums/en-US/operationsmanagergeneral/thread/def9592c-0de6-47e5-9312-5a5fbbc8df34

Accordingly i checked the Data Warehouse Synchronization Server Discovered Inventory in our case.

It was empty. Image as shown:

Ran the Powershell Script given in the technet forum:

#Note: change these values appropriately
$OperationalDbSqlServerInstance = "SDOHHQDBA107.mog.maerskoil.com"
$OperationalDbDatabaseName = "OperationsManager"
$DataWarehouseSqlServerInstance = "SDOHHQDBA107.mog.maerskoil.com"
$DataWarehouseDatabaseName = "OperationsManagerDW"

$ConsoleDirectory = "E:\Program Files\System Center 2012\Operations Manager\Console"

##########################################


$dataWarehouseClass = get-SCOMClass -name:Microsoft.SystemCenter.DataWarehouse
$seviewerClass = get-SCOMClass -name:Microsoft.SystemCenter.OpsMgrDB.AppMonitoring
$advisorClass = get-SCOMClass -name:Microsoft.SystemCenter.DataWarehouse.AppMonitoring

$dwInstance = $dataWarehouseClass | Get-SCOMClassInstance
$seviewerInstance = $seviewerClass | Get-SCOMClassInstance
$advisorInstance = $advisorClass | Get-SCOMClassInstance

#Update the singleton property values
$dwInstance.Item($dataWarehouseClass.Item("MainDatabaseServerName")).Value = $DataWarehouseSqlServerInstance
$dwInstance.Item($dataWarehouseClass.Item("MainDatabaseName")).Value = $DataWarehouseDatabaseName

$seviewerInstance.Item($seviewerClass.item("MainDatabaseServerName")).Value = $OperationalDbSqlServerInstance
$seviewerInstance.Item($seviewerClass.item("MainDatabaseName")).Value = $OperationalDbDatabaseName

$advisorInstance.Item($advisorClass.item("MainDatabaseServerName")).Value = $DataWarehouseSqlServerInstance
$advisorInstance.Item($advisorClass.item("MainDatabaseName")).Value = $DataWarehouseDatabaseName

$dataWarehouseSynchronizationServiceClass = get-SCOMClass -name:Microsoft.SystemCenter.DataWarehouseSynchronizationService
#$dataWarehouseSynchronizationServiceInstance = $dataWarehouseSynchronizationServiceClass | Get-SCOMClassInstance

$mg = New-Object Microsoft.EnterpriseManagement.ManagementGroup -ArgumentList localhost
$dataWarehouseSynchronizationServiceInstance = New-Object Microsoft.EnterpriseManagement.Common.CreatableEnterpriseManagementObject -ArgumentList $mg,$dataWarehouseSynchronizationServiceClass

$dataWarehouseSynchronizationServiceInstance.Item($dataWarehouseSynchronizationServiceClass.Item("Id")).Value = [guid]::NewGuid().ToString()

#Add the properties to discovery data
$discoveryData = new-object Microsoft.EnterpriseManagement.ConnectorFramework.IncrementalDiscoveryData

$discoveryData.Add($dwInstance)
$discoveryData.Add($dataWarehouseSynchronizationServiceInstance)
$discoveryData.Add($seviewerInstance)
$discoveryData.Add($advisorInstance)

#$connector = Get-ScomConnector -name:"Operations Manager Internal Connector"
$momConnectorId = New-Object System.Guid("7431E155-3D9E-4724-895E-C03BA951A352")
$connector = $mg.ConnectorFramework.GetConnector($momConnectorId)

$discoveryData.Overwrite($connector)

#Update Global Settings. Needs to be done with PS V1 cmdlets
Add-pssnapin microsoft.enterprisemanagement.operationsmanager.client

cd $ConsoleDirectory

.\Microsoft.EnterpriseManagement.OperationsManager.ClientShell.NonInteractiveStartup.ps1

Set-DefaultSetting ManagementGroup\DataWarehouse\DataWarehouseDatabaseName $DataWarehouseDatabaseName
Set-DefaultSetting ManagementGroup\DataWarehouse\DataWarehouseServerName $DataWarehouseSqlServerInstance


###################################################
After that it did show  some GUID etc in the Discovered Inventory for Data WareHouse Synchronization Servers
(We have to Management servers)

Within some time the Dashboard started to populate the data .

Hope this Helps.