Yes you can get notifications for a vehicle. Dahua NVRs do not use the term "whitelisted" and "blacklisted" now.
As far as I know, you need a Dahua ANPR camera to get only 'block listed' vehicles notification. Using the video metadata method would give a notification for every vehicle detected.
Video metadata method:
You need a 5 series or higher NVR.
If you have a 5 series NVR with either "-I", "-E/I", "-E", "-XI", "-AI" (and some other versions) then it probably has on board 'Video metadata'. This will not work if you have a "NVR5x-4KS2" NVR. Check your NVR's specifications.
Go into settings > AI > Parameters > Video metadata.
Select the camera you have. Which needs to be properly aligned and setup for capturing plates. Keep in mind you need decent FPS for fast moving traffic.
Enable "VehicleDetect" rule on the camera.
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The NVR will attempt to do ANPR, alongside detecting a vehicle type, color, etc.
My camera is not setup for ANPR (too wide, wrong angle, wrong type of camera). I use video metadata for car counting. I have a different ANPR camera.
Occasionally it picks up a plate, and almost got it right
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The actual 'ANPR' with general/block/allow list requires a Dahua ANPR camera. 5 series NVRs state 'ANPR by camera'.
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In DMSS app >Device details > multi alarm subscription > Other alarms > License Plate Recognition > Select your video channel.
With only the video metadata type on my system I do not see a method to only notify on block listed plates.... because there is no block or allow list when using video metadata.