The Invoke-IpamGpoProvisioning cmdlet creates and links three Group Policy Objects in the domain indicated by Domain parameter, ...

The Invoke-IpamGpoProvisioning cmdlet creates and links three Group Policy Objects in the domain indicated by Domain parameter, for provisioning IPAM access settings on the servers that are managed by IPAM. The cmdlet also modifies the domain wide DNS ACL to enable read access for IPAM. The value of GpoPrefixName must be the same as the one provided in the IPAM provisioning wizard when selecting the option of Group Policy Based provisioning.

You have not specified the optional parameters DelegatedGpoUser or DelegatedGpoGroup. The delegation parameters can be used to enable IPAM GPO edit privileges for users or groups who do not have domain or enterprise administrator privileges, but need to mark servers as managed or unmanaged in IPAM. {0}