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All the sites and VPN Infras needs a set of inputs respectively. In Casablanca release, SDC is not capable to support multiple sets of inputs in one service template so that we have to design the sites and VPN infra as a service and use 3 service templates to describe each kinds of node. The CCVPN service is created by mean of separate multiple Service Orders , with one service orderItem for each of the services that makes up the CCVPN connectivity Service.
Such solution, on the one hand, obviously, violates the idea of using one service template to create a CCVPN service. A CCVPN service consists of several site service and VPN service which in fact should be resource; On the other hand, Customers couldn't choose which site or VPN Infra to be included when instantiating a real service because all these resources are regarded as a service.
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