This script will invoke the IP Pool Collector service that will attempt to reclaim addresses that were not released during resource removal. Example resources that can consume IPv4 Addresses from pools are Logical Enclosures, OS Deployment Servers and Hypervisor Cluster Profiles.

Invoke-IPPoolCollector.ps1

# Replace the -NetworkID parameter with the right Subnet Pool ID to reclaim addresses
$subnet = Get-HPOVAddressPoolSubnet -NetworkId 10.41.87.0

ForEach ($range in $subnet.rangeUris)
{

    $_Uri = $range + '/allocated-fragments?start=0&count=1'

    $_AllocatedFragments = Send-HPOVRequest -uri $_Uri

    $_Uri = $range + '/collector'
    
    $Body = @{idList = @($_AllocatedFragments.members[0].startAddress)}

    Send-HPOVRequest -Uri $_Uri -Body $Body -Method PUT

}