diff --git a/source/Private/Get-CISAadOutput.ps1 b/source/Private/Get-CISAadOutput.ps1
new file mode 100644
index 0000000..4acf52f
--- /dev/null
+++ b/source/Private/Get-CISAadOutput.ps1
@@ -0,0 +1,41 @@
+<#
+    .SYNOPSIS
+        This is a sample Private function only visible within the module.
+    .DESCRIPTION
+        This sample function is not exported to the module and only return the data passed as parameter.
+    .EXAMPLE
+        $null = Get-Get-CISAadOutput -PrivateData 'NOTHING TO SEE HERE'
+    .PARAMETER PrivateData
+        The PrivateData parameter is what will be returned without transformation.
+#>
+function Get-CISAadOutput {
+    [cmdletBinding()]
+    [OutputType([string])]
+    param(
+        [Parameter(Mandatory = $true)]
+        [String]
+        $Rec
+    )
+    begin {
+        # Begin Block #
+    <#
+        # Tests
+        1.2.2
+        # Test number
+        $testNumbers ="1.2.2"
+    #>
+    }
+    process {
+        switch ($Rec) {
+            '1.2.2' {
+                # Test-BlockSharedMailboxSignIn.ps1
+                $users = Get-AzureADUser
+            }
+            default { throw "No match found for test: $Rec" }
+        }
+    }
+    end {
+        Write-Verbose "Retuning data for Rec: $Rec"
+        return $users
+    }
+} # end function Get-CISAadOutput
diff --git a/source/tests/Test-BlockSharedMailboxSignIn.ps1 b/source/tests/Test-BlockSharedMailboxSignIn.ps1
index 9025358..cfda390 100644
--- a/source/tests/Test-BlockSharedMailboxSignIn.ps1
+++ b/source/tests/Test-BlockSharedMailboxSignIn.ps1
@@ -31,9 +31,10 @@ function Test-BlockSharedMailboxSignIn {
         try {
             # Step: Retrieve shared mailbox details
             $MBX = Get-CISExoOutput -Rec $recnum
-
+            $objectids = $MBX.ExternalDirectoryObjectId
+            $users = Get-CISAadOutput -Rec $recnum
             # Step: Retrieve details of shared mailboxes from Azure AD (Condition B: Pass/Fail)
-            $sharedMailboxDetails = $MBX | ForEach-Object { Get-AzureADUser -ObjectId $_.ExternalDirectoryObjectId }
+            $sharedMailboxDetails = $users | Where-Object {$_.objectid -in $objectids}
 
             # Step: Identify enabled mailboxes (Condition B: Pass/Fail)
             $enabledMailboxes = $sharedMailboxDetails | Where-Object { $_.AccountEnabled } | ForEach-Object { $_.DisplayName }
diff --git a/tests/Unit/Private/Get-CISAadOutput.tests.ps1 b/tests/Unit/Private/Get-CISAadOutput.tests.ps1
new file mode 100644
index 0000000..4a2aa69
--- /dev/null
+++ b/tests/Unit/Private/Get-CISAadOutput.tests.ps1
@@ -0,0 +1,27 @@
+$ProjectPath = "$PSScriptRoot\..\..\.." | Convert-Path
+$ProjectName = ((Get-ChildItem -Path $ProjectPath\*\*.psd1).Where{
+        ($_.Directory.Name -match 'source|src' -or $_.Directory.Name -eq $_.BaseName) -and
+        $(try { Test-ModuleManifest $_.FullName -ErrorAction Stop } catch { $false } )
+    }).BaseName
+
+
+Import-Module $ProjectName
+
+InModuleScope $ProjectName {
+    Describe Get-PrivateFunction {
+        Context 'Default' {
+            BeforeEach {
+                $return = Get-PrivateFunction -PrivateData 'string'
+            }
+
+            It 'Returns a single object' {
+                ($return | Measure-Object).Count | Should -Be 1
+            }
+
+            It 'Returns a string based on the parameter PrivateData' {
+                $return | Should -Be 'string'
+            }
+        }
+    }
+}
+