Business Ownership: Where Do I Register My Vehicle Leased Under My Business

My question involves business law in the state of: DC and MD

I live in MD but operate my business in DC. Due to my profession I don't need a business license in DC.
MY business is registered to my home address in MD. Should my vehicle lease tags be in DC or in MD?

I had a police officer stop me and give me a verbal warning for my license not matching the state of my plates, and it was said it was a zoning violation - i cant find any evidence of this info online tho.

Any help or resources would be helpful!
Thanks!

Business Ownership: Where Do I Register My Vehicle Leased Under My Business