Currently we support declaring an input and assigning the input to the value of a property in the node template (i.e. in an VFC instance in a service).

It is possible to declare an input with a complex data type. TOSCA supports assigning the value of one of the nested elements of the input to a property. This story is to introduce this support to SDC.

For example:

data_types:
NetworkInfo:
derived_from: tosca.Data.Root
properties:
name:
type: string
gateway:
type: string

topology_template:
inputs:
management_network:
type: NetworkInfo

node_templates:
Bono_Main:
type: vRouter.Cisco
properties:
mgmt_net_name:

See chapter 4.4.1 of TOSCA Simple YAML Profile 1.3 for reference