In the actual version of documentation version 12.8, section "2.4. Installing the Self Node Remediation Operator by using the CLI " [1],

the following example for a subscription is mentioned:

apiVersion: operators.coreos.com/v1alpha1
kind: Subscription
metadata:
    name: self-node-remediation-operator
    namespace: self-node-remediation 
spec:
    channel: stable
    installPlanApproval: Manual 
    name: self-node-remediation-operator
    source: redhat-operators
    sourceNamespace: openshift-marketplace
    package: self-node-remediation

However, when applying it, the conditions reflect that it cannot judge about the version to use since it has different versions available in the package:

[root@ocp68-jump snro-install]# oc get sub/self-node-remediation -o yaml |grep -A25 conditions:
  conditions:
  - lastTransitionTime: "2025-10-29T14:41:11Z"
    message: all available catalogsources are healthy
    reason: CatalogSourcesAdded
    status: "False"
    type: CatalogSourcesUnhealthy
  - message: 'constraints not satisfiable: subscription self-node-remediation requires
      at least one of redhat-operators/openshift-marketplace/stable/self-node-remediation.v0.10.2,
      redhat-operators/openshift-marketplace/stable/self-node-remediation.v0.10.1,
      redhat-operators/openshift-marketplace/stable/self-node-remediation.v0.10.0,
      redhat-operators/openshift-marketplace/stable/self-node-remediation.v0.9.0,
      redhat-operators/openshift-marketplace/stable/self-node-remediation.v0.8.0 or
      redhat-operators/openshift-marketplace/stable/self-node-remediation.v0.7.1,
      subscription self-node-remediation exists, clusterserviceversion self-node-remediation.v0.10.2
      exists and is not referenced by a subscription, @existing/openshift-workload-availability//self-node-remediation.v0.10.2,
      redhat-operators/openshift-marketplace/stable/self-node-remediation.v0.10.2,
      redhat-operators/openshift-marketplace/stable/self-node-remediation.v0.10.1,
      redhat-operators/openshift-marketplace/stable/self-node-remediation.v0.10.0,
      redhat-operators/openshift-marketplace/stable/self-node-remediation.v0.9.0,
      redhat-operators/openshift-marketplace/stable/self-node-remediation.v0.8.0 and
      redhat-operators/openshift-marketplace/stable/self-node-remediation.v0.7.1 originate
      from package self-node-remediation'
    reason: ConstraintsNotSatisfiable
    status: "True"
    type: ResolutionFailed
  lastUpdated: "2025-10-29T14:42:09Z"

[1] https://docs.redhat.com/en/documentation/workload_availability_for_red_hat_openshift/23.3/html/remediation_fencing_and_maintenance/self-node-remediation-operator-remediate-nodes#installing-self-node-remediation-operator-using-cli_self-node-remediation-operator-remediate-nodes