Get the Entitlements for a SailPoint IdentityNow Source. Associated blogpost https://blog.darrenjrobinson.com/searching-and-returning-sailpoint-identitynow-entitlements-using-the-api-and-powershell/

Get Source Entitlements.ps1

# IdentityNow Orgname
$orgName = "myOrgname"

# Get IdentityNow Sources 
$IDNSources = Invoke-RestMethod -Method Get -Uri "https://$($orgName).api.identitynow.com/cc/api/source/list" -Headers @{Authorization = "Basic $($encodedAuth)" ;"content-type" = "application/json"} 
write-host -ForegroundColor Green "$($IDNSources.Count) Sources found" 
$utime = [int][double]::Parse((Get-Date -UFormat %s))

# Get Source Entitlements 
foreach ($idnSource in $IDNSources) {   
    $entitlementsURI = "https://$($orgName).api.identitynow.com/cc/api/entitlement/list?_dc=$($utime)&CISApplicationId=$($idnSource.externalId)"
    $sourceEntitlements = Invoke-RestMethod -Method Get -uri $entitlementsURI -Headers @{Authorization = "$($v3Token.token_type) $($v3Token.access_token)" ; "Content-Type" = "application/json"} 
    Write-Host -ForegroundColor green "$($sourceEntitlements.items.Count) entitlements retured for Source $($idnSource.description)"

    $myEntitlement = $sourceEntitlements.items | Select-Object | Where-Object {$_.displayName -like "*SYD*"}
    $myEntitlement
}