SO to SDNC interface at VF-Module-TOPOLOGY-OPERATION-Assign failed.

1. VF-Module-Topology-Operation-assign DG does not return an object-path
2. XPATH in the set of the VNF-NAME was not right and naming.prefix
(set variables for generating unique name - node 71)

Should be:
<parameter name='generate-unique-name-input.prefix' value="`$service-data.vnfs.vnf[$vnf-index].vnf-data.vnf-topology.vnf-topology-identifier-structure.vnf-name + $db.vfc-model.nfc-naming-code`" />

Instead of
<parameter name='generate-unique-name-input.prefix' value="`$service-data.vnfs.vnf[$vnf-index].vnf-name + $db.vfc-model.nfc-naming-code`" />