Get-Parent-Business-Service.ps1

$SMServer = '{Service Manager Server}'

$selectedobjectobjectdisplayname = '{Windows Computer Principal Name}'

### Check if object is selected, if not exit 
if($selectedobjectobjectdisplayname -eq $null) {
	$Businessservice = "ObjectNotDefined"
	exit
}

### Import smlets module if needed 
if(!(Get-Module smlets)){Import-Module smlets -force}

$resulthash = @{}

### Get SCSM business services 
$bservices = get-scsmobject -ComputerName $SMServer -Class (get-scsmclass -computername $SMServer | where {$_.name -eq "system.service"})

### Get components of SCSM business services 
foreach($bservice in $bservices) { 
	$components = $null
	$componentsarray = @()
	$components = $bservice | get-scsmrelatedobject -Depth 1 -ComputerName $SMServer
	foreach($component in $components) { 
		$componentsarray += $component.name
	}
	$resulthash.add($bservice.displayname,$componentsarray)
}

### Search object guid 
$businessservices = $resulthash.GetEnumerator() | Where-Object {$_.Value -like $selectedobjectobjectdisplayname} | foreach{$_.key}

### Output
if($businessservices -eq $null) {$Businessservice = $False}