When no value passed to annotation cloud.google.com/network-tier service remain stuck in pending 

    4.19.0-0.nightly-2025-01-15-060507

    Always

    1.Create service use below yaml 
apiVersion: v1
kind: Service
metadata:
  labels:
    name: lb-service-unsecure
  name: lb-service-unsecure
  annotations:
     cloud.google.com/network-tier: ""
spec:
  ports:
  - name: http
    port: 80
    protocol: TCP
    targetPort: 8080
  selector:
    name: web-server-rc
  type: LoadBalancer     

2. Service gets created successfully 
3. miyadav@miyadav-thinkpadx1carbongen8:~/annotations$ oc get svc lb-service1
NAME          TYPE           CLUSTER-IP       EXTERNAL-IP   PORT(S)        AGE
lb-service1   LoadBalancer   172.30.233.126   <pending>     80:30502/TCP   9m36s
miyadav@miyadav-thinkpadx1carbongen8:~/annotations$      

service stuck in pending state

     If possible it could produce error ( admission webhook may be to pass value to annotation ) 

Events:
  Type     Reason                  Age                From                Message
  ----     ------                  ----               ----                -------
  Normal   EnsuringLoadBalancer    33s (x8 over 10m)  service-controller  Ensuring load balancer
  Warning  SyncLoadBalancerFailed  32s (x8 over 10m)  service-controller  Error syncing load balancer: failed to ensure load balancer: unsupported network tier: ""