Public/Get-SyncHrManagerAsync.ps1

function Get-SyncHrManagerAsync
{
    [CmdletBinding(PositionalBinding=$false)]
    param
    (
        [Parameter(Mandatory=$true)][hashtable]$AuthHeader,
        [Parameter(Mandatory=$true)][object[]]$PersonDataInput,
        [Parameter(Mandatory=$false)][string]$BaseUrl = 'https://clients.synchr.com/synchr'
    )

    Write-Log -LogText "Starting function" -LogType normal

    if ($AuthHeader.Authorization -notmatch 'SHR apiKey') {
        Write-Log -LogText "Invalid AuthHeader. Use Get-SyncHrAuthHeader first."
        throw "Invalid AuthHeader. Use Get-SyncHrAuthHeader first."
        return
    }

    $activeEmps = $PersonData | ? {$_.emplStatus -eq 'A' -and $_.empNo.Length -gt 3}


    $writeLogDef = ${function:Write-Log}.ToString()

    $progressObj = @{
        count = $activeEmps.Count
        countDown = $activeEmps.Count
        countUp = 0
    }

    $logFilePath = $Global:LogPath

    try
    {
        $activeEmps | Foreach-Object -ThrottleLimit 40 -Parallel {

            ${function:Write-Log} = $using:writeLogDef

            $empNo = $PSItem.empNo
            $first = $PSItem.fname
            $last = $PSItem.lname

            Write-Progress -Activity "Getting user's Manager: $empNo $first $last" -Status "$(($USING:progressObj).countDown) Users Remaining.."  `
                           -PercentComplete (($(($USING:progressObj).countUp) / $($USING:progressObj.count)) * 100) -ErrorAction Ignore

            $($USING:progressObj).countDown--
            $($USING:progressObj).countUp++

            $empNoFilter = "%7b%22empNo%22%3a%5b%22eq%22%2c%22$($empNo)%22%5d%7d"
            $url = "$($USING:BaseUrl)/api/1.0/manager/list?filter=$empNoFilter"

            $errorObj = $null

            try 
            {
                $measure = Measure-Command {$response = Invoke-RestMethod -Method: Get -Uri $url -Headers $($USING:AuthHeader) -ContentType 'application/json'}

                $PSItem.manager_empNo = $response.manager.EmpNo
                $PSItem.manager_netId = $response.manager.netId
                $PSItem.manager_name = $response.manager.name
                $PSItem.manager_role = $response.manager.role
                $PSItem.manager_respTime = $measure.ToString()
            }
            catch 
            {
                $errorObj = $_
            }

            if ($errorObj)
            {
                $statusCode = $errorObj.Exception.Response.StatusCode.value__

                $PSItem.manager_errorMsg = $errorObj.Exception.message 
                
                Write-Log "Error getting manager for $empNo $first $last" -LogType: error -ErrorObject $errorObj -LogFolderPath $($USING:logFilePath) -FunctionName 'Get-SyncHrManagerAsync'
                
                if ($statusCode -eq 401)
                {
                    return
                }
                else
                {
                    continue
                }

            }
            
        }

        Write-Progress -Activity "Complete"  -Completed: $true -Status "Complete" -PercentComplete 100 -SecondsRemaining 0

    }
    catch
    {
        Write-Log "Unhandled exception" -LogType: error -ErrorObject $_
        throw $_
    }

    Write-Progress -Activity "Complete"  -Completed: $true
    return $PersonData

}