new namespaces gets dynamically added to schedule and fails validation

[dbebarta]

We have set the includenamespaces to * and when it detects the new ns it appends to the included namespaces leading to
Validation errors:

Invalid included/excluded namespace lists: includes list must either contain '*' only, or a non-empty list of items
Environment: staging
Even if we dont pass the field includeNamespaces, its taking default to * and later on adding the new ns created

Velero version (use velero version): v1.16.1
Can someone help
Obseration:
Manually added namespaces are not being removed automatically, even if those namespaces no longer exist. However, for namespaces created after the schedule was patched or created, Velero seems to automatically handle both additions and deletions.
I have a EKS cluster with version 1.31

Can anyone please suggest how can we handle this?
this is our schedule

Name:         staging-24hour-backup
Namespace:    velero
Labels:       <none>
Annotations:  <none>
API Version:  velero.io/v1
Kind:         Schedule
Metadata:
  Creation Timestamp:  2023-03-29T13:36:44Z
  Generation:          1059
Spec:
  Schedule:          @every 24h
  Skip Immediately:  false
  Template:
    Csi Snapshot Timeout:  0s
    Excluded Namespaces:
      default
    Excluded Resources:
      pods
    Hooks:
    Included Namespaces:
      *
    Metadata:
      Labels:
        Cluster:                   staging
    Ttl:                           0s
  Use Owner References In Backup:  false
Status:
  Last Backup:  2025-07-31T13:58:06Z
  Phase:        Enabled
Events:         <none>

When new namespace comes up

Namespaces:
Included: *, new-ns

[kaovilai]

Manually added namespaces are not being removed automatically, even if those namespaces no longer exist.

Expected behavior..

• means velero discover namespaces available.

If you added NS, velero won't remove them or ignore them.. you specified velero to backup a non existing NS, velero will tell you about its non-existence.

[kaovilai]

per #7569 and #7431 this is a desired behavior by folks.

[kaovilai]

dupe of #9137