In order to deploy and manage ONAP (sub)services using an external ETSI NFVO orchestrator, ONAP needs:

1. SO needs an ETSI SOL005 LCM API compliant consumer for network service Life Cycle Management
2. DCAE needs an ETSI SOL005 LCN API compliant provider for network service Life Cycle Notifications
3. SO needs a mechanism to convert an ONAP Service descriptor into an ETSI SOL001 Network Service descriptor