Get-MsIdServicePrincipalIdByAppId.ps1
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<# .SYNOPSIS Lookup Service Principal by AppId .EXAMPLE PS > Get-MsIdServicePrincipalIdByAppId 10000000-0000-0000-0000-000000000001 Return the service principal id matching appId, 10000000-0000-0000-0000-000000000001. .INPUTS System.String #> function Get-MsIdServicePrincipalIdByAppId { [CmdletBinding()] [OutputType([string])] param ( # AppID of the Service Principal [Parameter(Mandatory = $true, ValueFromPipeline = $true, Position = 1)] [string[]] $AppId ) begin { ## Initialize Critical Dependencies $CriticalError = $null if (!(Test-MgCommandPrerequisites 'Get-MgServicePrincipal' -MinimumVersion 2.8.0 -ErrorVariable CriticalError)) { return } } process { if ($CriticalError) { return } foreach ($_AppId in $AppId) { ## Filter service principals by appId and return id Get-MgServicePrincipal -Filter "appId eq '$_AppId'" -Select id | Select-Object -ExpandProperty id } } } |