Method to raise status messages with SCCM

New-SMSStatusMsg.ps1

Function New-SMSConnection {
    PARAM(
        [Parameter(Mandatory=$true)][string]$siteServer,
        [Parameter(Mandatory=$true)][string]$siteCode
    )
    $smsNamespace = "root\sms\site_$siteCode"
    $Locator = New-Object -com "WbemScripting.SWbemLocator"
    $Locator.Security_.AuthenticationLevel = 6
    $Connection = $Locator.ConnectServer($siteServer, $smsNamespace)
    Return $Connection
}

Function New-SMSStatusMsg {
    [CmdletBinding()]
    PARAM(
        [Parameter(Mandatory=$true)][string]$MessageText,
        [Parameter(Mandatory=$false)][UInt32][ValidateSet(256,512,768,1024)]$MessageType=768,
        [Parameter(Mandatory=$false)][UInt32]$Win32Error,
        [Parameter(Mandatory=$false)][UInt32]$ProcessID,
        [Parameter(Mandatory=$false)][UInt32]$ThreadID,
        [Parameter(Mandatory=$false)][DateTime]$Time,
        [Parameter(Mandatory=$false)][UInt32[]]$AttrIDs,
        [Parameter(Mandatory=$false)][string[]]$AttrValues,
        [Parameter(Mandatory=$false)][string]$TopLevelSiteCode,
        [Parameter(Mandatory=$false)][string][ValidateSet('Informational','Error','Warning')]$Type='Informational',
        [Parameter(Mandatory=$false)][UInt32]$LocaleID=1033,
        [Parameter(Mandatory=$true)][string]$MachineName,
        [Parameter(Mandatory=$true)][string]$ApplicationName,
        [Parameter(Mandatory=$true)][__ComObject]$Connection
    )

    $Context = New-Object -com WbemScripting.SWbemNamedValueSet
    $Context.Add("LocaleID", "MS\$LocaleID") | Out-Null
    $Context.Add("MachineName", "$MachineName") | Out-Null
    $Context.Add("ApplicationName", "$ApplicationName") | Out-Null

    #Obtain an instance of the class using a key property value.
    $Class = $Connection.Get("SMS_StatusMessage")

    #Obtain an InParameters object specific to the method.
    $Inparams = $Class.Methods_.item("Raise$($Type)StatusMsg").Inparameters.SpawnInstance_()

    #Add the mandatory input parameters.
    $Inparams.Properties_.item("MessageText").value = $MessageText
    $Inparams.Properties_.item("MessageType").value = $MessageType
    
    #Add the optional input parameters.
    if ($Win32Error) {$Inparams.Properties_.item("Win32Error").value = $Win32Error}
    if ($ProcessID) {$Inparams.Properties_.item("ProcessID").value = $ProcessID}
    if ($ThreadID) {$Inparams.Properties_.item("ThreadID").value = $ThreadID}
    if ($Time) {$Inparams.Properties_.item("Time").value = $Time}
    if ($AttrIDs) {$Inparams.Properties_.item("AttrIDs").value = $AttrIDs}
    if ($AttrValues) {$Inparams.Properties_.item("AttrValues").value = $AttrValues}
    if ($TopLevelSiteCode) {$Inparams.Properties_.item("TopLevelSiteCode").value = $TopLevelSiteCode}

    #Execute the method. Out Parameter is Created.
    $Outparams = $Connection.ExecMethod("SMS_StatusMessage","Raise$($Type)StatusMsg",$Inparams,$null,$Context)
}


$Connection = New-SMSConnection -siteServer 'siteServer.abc.example.com' -siteCode 'ABC'
New-SMSStatusMsg -MessageText 'Custom message text' -Type Informational -MachineName 'abc012345' -ApplicationName 'ABC-CustomApplication' -Connection $Connection