A NetworkFunction is a functional block within a network infrastructure that has well-defined external interfaces and well-defined functional behaviour. Indicates whether the NetworkFunction can be shared (only applies to Pnfs or Vnfs). A functional block within a network infrastructure that has well-defined external interfaces and well-defined functional behaviour. NOTE: In practical terms, a Network Function is today often a network node or physical appliance Identifier of the network function Description of the type of network function Description of the network function Role the network function will be providing. The NfIndicator class defines the indicator the NF supports The human readable name of the NfIndicator. Defines the allowed values or value ranges of this indicator. Describe the source of the indicator. The possible values are: • VNF, • EM, • Both. This tells the consumer where to send the subscription request. Describe the source of an indicator.