An existing EMC NetWorker customer has already integrated an EMC Avamar server with
NetWorker. They have tried to backup their clients to the deduplication node. However, a message
occurs stating that the backup session is waiting for a writable volume.
What is the possible cause for this message?

A.
Dedicated AFTD was not created

B.
Client license is not installed

C.
Base Enabler has expired

D.
Avamar maintenance window is currently running

Explanation: