Get-Childitem cannot find drive. A drive with the name 'X' does not exist

Question

I'm writing a script to copy files with powershell using mapped drives in file explorer. It has the above error message. This is what it looks like:

function CopyFileToFolderUNC($SourcePath, $DestinationPath){
   $temp1 = Get-ChildItem -Path $SourcePath -Recurse -Force #this is the line of error message
   Copy-Item -Path $SourcePath -Destination $DestinationPath #source:\* -Destination target  #watch out for login boxes when test this
}

#start here
$tempSource = "X:\Credentialing\FORMS"
$ToLocation = "C:\Users\me\Documents\2018\powershellFiles\toLoc" 

CopyFileToFolderUNC $tempSource $ToLocation

It has the same error message on the Copy-Item line (if I comment out the Get-ChildItem line) but it fails in Get-ChildItem before that. How do I get it to use the mapped drive on the computer the script is run on? I am running this on a laptop.

I set-executionPolicy RemoteSigned in powershell at the command line.

I have this permission when I run Get-PSSessionConfiguration in powershell at command line:

Permission : NT AUTHORITY\INTERACTIVE AccessAllowed, BUILTIN\Administrators AccessAllowed, BUILTIN\Remote Management Users AccessAllowed

I am running as administrator. Powershell prompt is:

[DBG]: PS C:\WINDOWS\system32>>

$PSVersionTable.PSVersion:

Major  Minor  Build  Revision
-----  -----  -----  -------- 
5      1      16299  666

I looked at powershell mapped drive E but they are using a mapped drive on a server so I wasn't sure what I needed that they were doing in the example.

Answer 1

I found this: Net use

So I added

if(-Not (Test-Path "X:\")) {net use X: \\NDRIVE01\Svcs_FG}

And now it's at least finding the mapped drive.