Services are usually expected to undergo several changes during their lifecycle. Currently there is no notion of service modifications supported, so in order to even replace one VNF with different one you would need to create a new service, which for mature services is probably impossible because of downtime.
Project | Impact |
|---|---|
SDC | Support ability to modify existing services. |
SO | Orchestrate service change |
A&AI | Support modification of existing inventory to reflect service change |