Scenario: updating choice column option value for all the columns in a site collection including sub sites. Solution ; Below script will iterate through all the sites and sub sites of site collection and finds the choice column " choiceColumnName" and will change the value "Choice 1" to "Option 1". Powerhsell Script: param($url = $(Read-Host -prompt "Root Site Collection Url")) #Get the PowerShell Snapin if ((Get-PSSnapin "Microsoft.SharePoint.PowerShell" -ErrorAction SilentlyContinue) -eq $null) { Add-PSSnapin "Microsoft.SharePoint.PowerShell" } #Get Root Site $root = Get-SPSite $url #If site was found / valid if($root -ne $null) { foreach($subSite in $root.AllWebs) { $subSiteTitle = $subSite.Title Write-Host $subSiteTitle -ForegroundColor Magenta $subSiteURL = $subSite.Url Write-Host $subSiteURL -Foregroun