Some limitations of CDP

Here are some limitations of CDP:

NetBackup features like Intelligent policy and Backup now, and Roll back instantly from web UI are not supported.
CDP for VMware and Veritas Resiliency Platform does not work together for the same VM. However, both products can protect different VMs on the same vCenter cluster.
CDP does not support any standalone ESX, which is not managed by any VC. An ESXi which is not part of any ESXi cluster but is managed by VC, is also not supported.
You must turn on the VMs before subscribing them to a CDP-based protection plan, and also for the first full backup.
Do not protect the same VM using both CDP and VMware vStorage APIs for Data Protection (VADP) policies. If you protect a VM using CDP policy, then the VADP backup for that VM may fail.
After subscribing a VM for CDP backup policy, if any disk from the VM is removed or a new disk is added, the subsequent backups fail. In such cases, unsubscribe the VM from CDP protection, and subscribe it again.
Due to VMware limitation, if you try to protect a VM using the NetBackup agent for VMware and CDP, both at the same time, backup operation fails with error or the operation might crash with symbols from VDDK.