Looks like commit https://gerrit.onap.org/r/67851 introduces a bug (missed that in reviews).
Port 30263 is used in multicloud/charts/multicloud-prometheus/charts/prometheus-grafana/values.yaml which is also used in sdc-dcae-fe chart (and is allicated in node-port wiki page to sdc)

root@borislav-rancher:~# helm upgrade -i aaa-sdc local/sdc --namespace onap -f ~/global-values.yaml --set global.pullPolicy=IfNotPresent
Release "aaa-sdc" does not exist. Installing it now.
Error: release aaa-sdc failed: Service "sdc-dcae-fe" is invalid: spec.ports[0].nodePort: Invalid value: 30263: provided port is already allocated

root@borislav-rancher:~/onap/master/oom/kubernetes# grep -r 63 | grep -i NodePort
multicloud/charts/multicloud-prometheus/charts/prometheus-grafana/values.yaml: nodePort: 63
sdnc/values.yaml: geoNodePort3: 63
sdc/charts/sdc-dcae-fe/values.yaml: nodePort: "63"

(note SDNC is using prefix 304, so it is not relevant).