From the vNF Changes page, the following vnf is not accessible from VID because the drop down menu for the NF_Role is never provided after entering

Subscriber Type: Demonstration
Service Type: vLB

Integration-SB04 lab

          "vnf-id": "39f5fb60-0893-465e-b4c6-d70237c7a38a",

            "vnf-name": "Ete_vLB_031472e0_0",

            "vnf-type": "vLB 2019-07-24 22:25:02/vLBMS bf20467d-4bc7 0",

            "service-id": "9b385514-59a1-4161-ab56-669ab7c4d3db",

            "prov-status": "ACTIVE",

            "orchestration-status": "Active",

            "in-maint": false,

            "is-closed-loop-disabled": true,

            "resource-version": "1564690692951",

            "model-invariant-id": "b45ae958-e4c8-4ebf-9e8f-0ae64c99fa5b",

            "model-version-id": "435b11fe-101e-47c2-8dc3-96910bf4cdc3",

            "model-customization-id": "10c73ae3-eaa0-47c8-b377-123ff25a954b",

            "nf-type": "LOADBALANCER",

            "nf-function": "vlb",

            "nf-role": "vLB",