BGP Peer Customer

Hi Friends,

We will Peer with a customer in the data center. He wants to remove his own IP prefixes from me. We set up BGP with him and I forwarded it to my upper operators, but the IP addresses do not go from my router to the customer router and my router device (vyos 1.4.x) gets stuck. Is there any chance you can provide sample output of what import export policies and route-map should be like?