Resolving CustomDomain Deletion in ROSA Due to Admission Webhook "regular-user-validation.managed.openshift.io" Denied

Issue

• Unable to delete a custom domain in ROSA (Red Hat OpenShift Service on AWS) using the oc command-line tool.

Command Used:

oc delete customdomain $CUSTOM_DOMAIN

Error Received:

Error from server (Prevented from accessing Red Hat managed resources. This is in an effort to prevent harmful actions that may cause unintended consequences or affect the stability of the cluster. If you have any questions about this, please reach out to Red Hat support at https://access.redhat.com/support): admission webhook "regular-user-validation.managed.openshift.io" denied the request: Prevented from accessing Red Hat managed resources. This is in an effort to prevent harmful actions that may cause unintended consequences or affect the stability of the cluster. If you have any questions about this, please reach out to Red Hat support at https://access.redhat.com/support