An alert indicating that entities cannot be protected within a Consistency Group is commonly triggered when a constituent entity, such as a Virtual Machine (VM) or Volume Group (VG), has been deleted from the source cluster. The protection policy or recovery plan references this entity, but during the replication schedule, the system cannot locate it. This discrepancy causes the protection job to fail for the entire Consistency Group, generating an alert that requires administrative intervention, typically by removing the deleted entity from the protection configuration.

A. A VM or VG can only be part of a single recovery plan. This is a configuration constraint enforced by Prism Central during setup, which would prevent the creation of the second plan, rather than causing a recurring protection alert.

C. Inconsistent logical timestamps are a symptom of an underlying replication issue, often with synchronous or near-synchronous replication, not a root cause for why an entity is unprotectable from the outset.

D. All VMs and Volume Groups contain essential state metadata. The presence of this metadata is normal and necessary for operation and protection; it is not a cause for a protection failure alert.

1. Nutanix Disaster Recovery Guide v6.5

Troubleshooting Data Protection and Disaster Recovery > Alerts for Data Protection

Section: A130103 - Protection rule failed to protect one or more entities. This alert is triggered when a protection rule fails

and a common cause is that a VM included in the protection rule has been deleted.

2. Nutanix Disaster Recovery Guide v6.5

Recovery Plan Management > Recovery Plan Constraints. The documentation explicitly states

"A guest VM can be part of only one recovery plan." This confirms that option A describes a configuration block

not a runtime protection failure alert.

3. Prism Central Alerts and Events Reference Guide

Alert A130154 - Entity is not protectable. The guide lists potential causes for this alert

including the deletion of the entity from the inventory

which directly supports the correct answer.