As title, installed OCP 4.21 on ARO and deploy oadp on aks follow doc(https://docs.google.com/document/d/1cz1eeiIkTQXqT_hwyB4muqT6z87e5xNqTNgHXzSgOy8/edit?tab=t.0#heading=h.957dstisjfz6), hcp backup failed with err msg: "phase: PartiallyFailed",

the velero err log is: time="2026-01-05T08:32:53Z" level=error msg="Error backing up item" backup=openshift-adp/geliu3-management-hc-clusters-t9pbv6 error="error executing custom action (groupResource=pods, namespace=clusters-geliu3-management-hc, name=azure-disk-csi-driver-controller-58cf4f5565-ww7gm): rpc error: code = Unknown desc = configmaps \"config\" not found" error.file="/workspace/pkg/backup/item_backupper.go:398" error.function="github.com/vmware-tanzu/velero/pkg/backup.(*itemBackupper).executeActions" logSource="/workspace/pkg/backup/backup.go:863" name=azure-disk-csi-driver-controller-58cf4f5565-ww7gm            there are some discussion about more details:https://redhat-internal.slack.com/archives/G01QS0P2F6W/p1767514470233959 

    -always

    1.installed OCP 4.21 on ARO and deploy oadp-1.5 on aks     
    2.Created dpa with hypershift plugin and bsl
    3.Create oadp-backup and check backup status:                                status:
    completionTimestamp: "2026-01-04T07:47:07Z"
    errors: 90
    expiration: "2026-01-04T09:46:48Z"
    formatVersion: 1.1.0
    hookStatus: {}
    phase: PartiallyFailed
    progress:
      itemsBackedUp: 338
      totalItems: 338
    startTimestamp: "2026-01-04T07:46:48Z"
    version: 1     

 hcp backup fails with Err "phase: PartiallyFailed"

 hcp backup succeed.